Unit Test Review

Which of these equations represents the graph below?

• y = 3x + 2

• y = 2x - 3

• y = 2x + 3

• y = 3x - 2

Which of the following tables can be generated from the equation y = 2x + 1?

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Consider the graph below. Which equation represents the relationship between the x-values and y-values in the graph?

• y = 5x - 3/5

• y = 3/5x + 5

• y = 5x + 3/5

• y = 3/5x - 5

A fitness club opens with 80 members. Each month the membership increases by 15 members. Which equation represents the relationship between the number of months the club has been opened, x, and the total fitness club membership, y?

• y = 15x

• y = 15x + 80

• y = x + 15

• y = 80x + 15

An internet service provider charges a $35 sign-up fee and $40 per month for an internet plan. Which representation shows the relationship between the number of months, x, and the total cost of the internet plan, y?

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• y = 40x + 35

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• y = 75x

Lara has $5 but needs more money to buy a new bike. She decides to mow lawns in the neighborhood for $10 apiece to earn money. Which of the following tables shows the amount of money Lara will have, y, if she mows x lawns?

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Which table(s) of data illustrate(s) a constant rate of change?

• I and II

• II and III

• II only

• III only

Gregory is creating circular stepping stones for his garden path. As the diameter d, of the circles increase, the circumference c, increases as shown on the table below. Which of the following graphs BEST represents the relationship between the radius of a circle and its circumference?

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A math class invented a machine to solve problems. The table shows what happened to a number when it goes in and comes out of the machine. Which rule describes the number pattern from the In to the Out of the math machine?

• add 10

• add 20

• multiply by 2 then subtract 5

• multiply by 3 then subtract 15

The table below shows the time it takes a prototype car to travel different distances. What is the constant rate of change in this situation in miles per hour? (pay attention to the x, is it in minutes or hours?)

• 132 miles per hour

• 60 miles per hour

• 55 miles per hour

• 0.92 miles per hour