8th Grade Semester Exam Review

Which is an equation of the line that passes through
the points (-2, 4) and (5, 3)?

• y = −7x + 4

• y = 7x + 3

•  $y=\frac{1}{7}x-\frac{26}{7}$  

•  $y=-\frac{1}{7}x+\frac{26}{7}$  

The graph represents slope as a rate of

change. Which is the slope of the line shown?

• 4.8

• -3

• $-\frac{2}{3}$

• $\frac{2}{3}$

What are the slope and the y-intercept of the graph

of the linear function shown on the grid?

• Slope = 4, y-intercept = -6

• Slope = -4, y-intercept = -1.5

• Slope = -1/4, y-intercept = -1.5

• Slope = 1/4, y-intercept = -6

Mr. Lehman is a piano tuner. He charges his clients a fixed amount for a house call plus his labor, which is based on an hourly rate. The graph below shows how much Mr. Lehman charges as a function of the time required to tune a piano. Which of the following best represents Mr.Lehman’s hourly rate for labor?

• $10

• $15

• $20

• $25

Julie made 25 international long-distance phone calls to London last month. The scatterplot below shows the length and cost of each phone call she made. Which conclusion is best supported by the scatterplot?

• As the length of a call increases, the cost of the

  call increases.

• As the length of a call increases, the cost of the

  call remains the same.

• As the length of a call increases, the cost of the

  call decreases.

• There is no relationship between the length of

  a call and the cost of a call.

The daily attendance at a bowling alley was recorded for 15 days. The scatterplot shows the number of lanes rented each day and the number of people who bowled that day. Which statement is best supported by the scatterplot?

• There is a non-linear association between the number of lanes rented and the number of people who bowl.

• There is a negative linear association between the number of lanes rented and the number of people who bowl.

• There is no apparent association between the number of lanes rented and the number of people who bowl.

• There is a positive linear association between the number of lanes rented and the number of people who bowl.

Four students are each trying to raise the same amount of money for a class trip. The table below shows how much of each student’s goal has been met. Which list shows the numbers in the table in order from least to greatest?

• $0.7,65\%,\frac{5}{8},\ \frac{2}{3}$

• $0.7,\frac{5}{8},65\%,\ \frac{2}{3}$

• $\frac{5}{8},65\%,\ \frac{2}{3},\ 0.7$

• $\frac{5}{8},\ \frac{2}{3},\ 65\%,\ 0.7$

Two numbers are shown on the number line. Which value is NOT located between these two numbers on the number line?

• $\pi$

• $\sqrt{9}$

• $\frac{\pi}{9}$

• $\frac{\pi^2}{9}$

The graph below summarizes Sasha’s bicycle trip. Which statement best describes Sasha’s bicycle trip?

• Sasha stopped riding her bike.

• Sasha stayed home and time ran out.

• Sasha rode her bicycle towards home.

• Sasha started her bicycle trip from home.

A phone company charges 25 cents for each call plus 5 cents per minute. Which number sentence shows the relationship between the number of minutes (t ) and the price (c), in cents?

• c = 25t + 25

• c = 8t + 40

• c = 20 + 5t

• c = 5t + 25