A scientist fit a line to set of data relating the amount of a pool chemical added to water x, in fluid ounces, and the percent of change in the level of phosphates in the water, y. The graph shows the residuals for the line of fit. Which best describes the correlation between the amount of the chemical added and the change in the level of phosphates?

There is a moderate correlation

Consider $$f\left(x\right)=x^2-1\ and\ g\left(x\right)$$ , which is a linear function that passes through the points (0,5) and (-1, 5) . Which statement accurately compares the intervals over which each function is positive or negative?

f(x) is negative for x-values between -1 and 1 and g(x) is never negative

F(x)and g(x) are both positive for all x-values

f(x) is positive for all x-values and g(x) is only positive for x > 0

f(x) is positive for x-values less than -1 or greater than 1, and g(x) is always negative

For a science project, Marvin studied the effect of fertilizer on plant growth. After collecting data about the amount of fertilizer used and the growth of the plants, he analyzed the data and found that there was a strong positive correlation between the two variables. Which statements could describe Marvin’s data? Select all that apply.

The data follow a linear pattern when plotted on a scatter plot

The line of best fit has a positive Slope

As the amount of fertilizer increases, the growth of the plants increases.

The line of best fit has a slope of 0

The line of best fit has a negative slope

A floral shop sells roses for $3 each. The total cost for roses can be modeled by $$f\left(x\right)=3x$$ . For Valentine’s Day, the shop is running a promotion during which they will deliver roses to any address in the city for a $12 delivery fee. The total price of delivering roses can be modeled by $$g\left(x\right)=3x+12$$ . Which statement describes the graph of as it relates to $$f\left(x\right)$$ ?

g(x) is the translation of f(x) up 12 units

g(x) is the translation of f(x) left 12 units

g(x) is the translation of f(x) right 12 units

g(x) is the translation of f(x) down 12 units

Which situation describes exponential decay?

The value of a piece of machinery decreases by 19% every year.

The value of a piece of machinery decreases by $5000 every year.

The value of a piece of machinery decreases by $100 after the first year, $200 after the second year, $300 after the third year, $400 after the fourth year, and so on.

The value of a piece of machinery decreases by $100 after the first year, $200 after the second year, $400 after the third year, $800 after the fourth year, and so on.

Talia throws a ball upward while standing on a platform. The table shows the height of the ball h(t) after t seconds. What type of function models the height of the ball over time?

Not enough information given to determine a function type

A recent market survey indicated that 37% of the citizens in town would support a new coffee shop. The survey has a margin of error of 1.7%, and the population of the town is 36,170. Based on the survey, which statement about the number of people who would support for a new coffee shop is true?

The number of people who would support a new coffee shop is between 12,768 and 13,998

At least 13,383 people would support a new coffee shop

At most 19532 people would support a new coffee shop

The number of people who would support a new coffee shop is between 6872 and 19,532

The function $$y=144-3x$$ represents the length in inches of a rope after knots have been tied in it. Which statement accurately interprets the y-intercept of this function?

The y-intercept is 144, which means that the rope is 144 inches long before any knots are tied in it

The y-intercept is 144, which mean that 144 nots can be tied in the rope

The y-intercept is 48, which means that the rope is 48 inches long before any knots are tied in it

The y-intercept is 48, which means that 48 knots can be tied in the rope

During an experiment, Alysia takes the temperature of a solution every minute after it is taken off the heat source. She records the data in the table shown.

the function representing the data is exponential

the temperature values are decreasing by a constant ration

The function representing the data is quadratic

the first differences are equal

the second differences are equal

Line and line are perpendicular. Line passes through the points (3, 2) and (6, 7), and line B passes through the point (3, -12) . Which statement about the y-intercepts is true?

The y-intercept of line A is equal to the y-intercept of line B

The y-intercept of the line A is greater than the y-intercept of line B

the y-intercept of line A is less than the y-intercept of line B

There is not enough information to compare the y-intercepts

Two projectiles are launched at the same time. The functions f(x) and g(x) model the heights, in feet, of the two objects x seconds after they are launched. Which statements about Object A and Object B are true? Select all that apply.

Object A will hit the ground after Object B.

Both objects have the same maximum height.

Object A is in the air longer than Object B.

The height of Object B is increasing for less time than Object A.

Both objects start from ground level.

Which situations likely illustrate causation? Select all that apply.

A study shows a correlation between a person’s height and their armspan.

There is a correlation between how many miles an employee lives from their place of work and their average commute time

A statistical study shows a positive correlation between birth year and number of hours spent on a cell phone per day.

A study indicates a correlation between those who enjoy literature and those who enjoy classical music.

There is a correlation between a person’s hair color and their eye color.

Magdalena and George both open savings accounts at the same time. The amount that Magdalena has in her account months after opening it is given by $$y=2500+25x$$ . The amount y in George’s account after x months is $$y=3000+130x$$ . Solve and interpret the solution to this system of equations.

The solution to the system does not make sense in this context. The two accounts never have the same amount of money.

After 100 months, both people have $10,000 in their accounts.

After 100 months, Magdalena has $15,000 and George has $16,000.

One hundred months before they open savings accounts, Magdalena and George have the same amount of money

The two-way frequency table shows the number of adults who visited two different parks in a given month by age bracket. Which statements can be made about this data? Select all that apply.

Twenty-four people age 18–30 visited the dog park.

A person who visited the dog park was about four times as likely to be older than 30 than age 18–30.

Eighty-one people age 18–30 visited the parks.

More people age 18–30 visited a park than people older than 30.

More people age 18–30 visited the park with a walking trail than people older than 30.

EOC Practice test

Authored by Colleen Skerry

Mathematics

9th Grade

CCSS covered

Used 4+ times

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MULTIPLE CHOICE QUESTION

10 mins • 3 pts

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

The frog population is growing exponentially.

The frog population is declining exponentially

the frog population is growing at a constant rate

the frog population is declining at a constant rate

Which polynomial expressions are prime? Select all that apply.

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

Which quadratic function is shown in the graph?

MULTIPLE CHOICE QUESTION

10 mins • 3 pts

Jamal opened a savings account with $1500 that earns 1.2% simple interest monthly. What kind of function can be used to model the balance of the account months after Jamal opened it?

Constant

Linear

Quadratic

Exponential

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EOC Practice test

Which polynomial expressions are prime? Select all that apply.

Which quadratic function is shown in the graph?

Jamal opened a savings account with $1500 that earns 1.2% simple interest monthly. What kind of function can be used to model the balance of the account months after Jamal opened it?

Which inequality represents the graph?

Which function has the greatest slope?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

EOC Practice test

Which polynomial expressions are prime? Select all that apply.​ ​

Which quadratic function is shown in the graph?

Jamal opened a savings account with $1500 that earns 1.2% simple interest monthly. What kind of function can be used to model the balance of the account months after Jamal opened it?

Which inequality represents the graph?

Which function has the greatest slope?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

Which polynomial expressions are prime? Select all that apply.