Quiz about March MATHness Grade 8 Week 1

Question 1

The table shows the proportional relationship between the number of hours (h) Jalen has been biking and the total distance (d) he covered, in kilometers. Select the equation which shows a distance per hour that is 3 times more than the distance Jalen covered per hour.

Accepted Answer

d=10.5h

Answer

d = 3h

Answer

d=3.5h

Answer

d=17.5

Question 2

A cook uses 2.5 cups of flour for each ounce of butter in a recipe. Which graph represents the relationship between the amount of flour and the amount of butter in the recipe?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 3

Select the statement that correctly describes the solution to this system of equations.

$$2x\ =\ -y\ +\ 8$$

$$4x-2y=8$$

Accepted Answer

There is exactly one solution at (3,2)

Answer

There is exactly one solution at (0,8)

Answer

There are infinitely many solutions

Answer

There is no solution

Question 4

Ramon sold $$9^6$$ books in $$9^2$$ days. On average, how many books did he sell each day?

Accepted Answer

$$9^4$$

Answer

$$9^8$$

Answer

$$9^{12}$$

Answer

$$81^8$$

Question 5

Three friends have recorded their savings account balance every month. The scatter plot shows the time and balance after each month. The line of best fit has the equation $$y=a+bx$$ , where a and b are constants. What does the y-intercept tell you about the friends?

Accepted Answer

The predicted initial amount

Answer

The predicted change in savings each person each month

Answer

The total balance of all three accounts together

Answer

The number of months they have been saving

Question 6

Select all expressions that have a value greater than $$\sqrt[]{1.46}+\ 8$$

Accepted Answer

$$2\sqrt[]{5}+\ 6$$

Accepted Answer

$$4+\frac{2\pi}{\sqrt[]{3}}$$

Accepted Answer

$$4\pi$$

Answer

$$8\ -\ \frac{2}{\sqrt[]{40}}$$

Question 7

This scatter plot shows the relationship between the average daily temperature and the number of air conditioners sold. Select all the true statements based on the scatter plot.

Accepted Answer

There is a linear association between average daily temperatures and the number of air conditioners sold.

Accepted Answer

Higher temperatures tend to result in a higher number of air conditioners solve.

Answer

There is a negative correlation between average temperatures and sale of air conditioners.

Answer

There are no true statements.

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