Unit Test — Unit test

Question 1

The graph represents the expected hourly revenue, in dollars, y, earned by a car wash for each decrease of x dollars in the price of a car wash.

Revolt · Accepted Answer

$200

Question 2

The data in the table represents a company’s profit based on the number of items produced.

Revolt · Accepted Answer

y = –1.026x2 + 1016.402x – 162075

Question 3

Mr. Palmer does an experiment to investigate the effects of distractions on studying and learning. He gives each participant a line with 10 words to memorize in 5 minutes. Some of the participants are interrupted during the 5 minutes with text messages from friends. The graph shows the number of words remembered after 5 minutes and the number of text messages sent to the participants as distractions.

Revolt · Accepted Answer

5

Question 4

The graph shows the relationship between the weight of a box and the number of books added to the box.

Revolt · Accepted Answer

f(x) = 1.5x + 0.5

Question 5

Kyle believes that the equation of the line of best fit for the scatterplot below is . Which statement best summarizes why Kyle is incorrect?

Revolt · Accepted Answer

Kyle’s equation has a negative slope, but the scatterplot shows a positive correlation.

Unit Test — Unit test Answers

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