Unit 5 Mid-Unit Quiz Review

Weslee makes and sells keychains. The profit she makes is proportional to the number of keychains she sells. If Weslee makes a profit of $43.75 for selling 5 keychains, how much profit would she make for selling 9 keychains.

• $75.25

• $78.75

• $79.20

• $86.50

Which statement is true about the line shown on the graph below?

• The y-intercept is negative.

• The slope is negative.

• For every 1 unit x increases, y increases by 2.

• For every 2 units x increases, y increases by 1.

When graphed, which of the following lines would be the steepest?

• y = 7.3x

• y = 1/7 x

• y = 7.1x

• y = 30/4 x

Fill in the blank: The slope of a line is the ratio of the change in ___ to the change in ___.

• x, y

• y, x

• y-intercept, x-intercept

• x-intercept, y-intercept

Which of the following represents the equation of a line with a slope of 3 and y-intercept of -5?

What is the equation for the total cost, c, Isabella would pay if she invited n people?

• c = 25n

• c = 37.5n

• c = 50n

• c = 75n

The manager of the restaurant tells Isabella that it would only cost $31.50 per person if she had a party during lunch instead of having a dinner party. If Isabella wanted to invite 16 people, how much money would she save by having her party during lunch instead of dinner?

• $96

• $504

• $600

• $1104

What is the slope of the line with the equation y = x + 2?

• 2

• 1

• 0

Fill in the blank: For the equation y = 2x - 3, the slope is _____ and the y-intercept is _____.

• (A) 2, -3

• (B) -2, 3

• (C) 3, -2

• (D) -3, 2