Unit 3 CFA Review

What is the x-intercept of the graph?

• (1,0)

• (0,1)

• (2,0)

• (0,2)

What is the y-intercept of the graph?

• (4, 0)

• (-2, 0)

• (0, 4)

• (0, -2)

Which choice best describes the slope of the line?

• Zero

• Undefined

• Deceasing

• Increasing

What is the zero of the graph?

• -2

• 0

• -4

• -3

What is the x-intercept of the graph?

• (-4,0)

• (0, -4)

• There are none

• (0, 0)

A package of baseball cards are sold for $6 each. It costs the manufacturer $500 plus $2 per package of cards to create. Which equation represents the profit, y, earned by selling x packages of baseball cards?

• y = 6x – 2x + 500

• y = 8x + 500

• y = 6x – (2x + 500)

• y = 500 + 2x

A downtown shop rents scooters for a one-time cost of $20.50 plus $7.50 per hour. Which equation can be used to find y, the total cost that a group of people must pay to rent x scooters for 8 hours?

• y = 28 + 8x

• y = 20.50 + 60x

• y = 224x

• y = 80.50x

Which expression best describes the graph?

• y = x + 2

• $y\ =\ -\frac{2}{3}x\ +\ 3$

• $y=-\frac{2}{3}x\ +\ 2$

• $y=\frac{2}{3}x\ +3$

Joshua conducted an experiment where he dropped rocks of the same size into a jar of water. He measured the height of the water after every five rocks. The table shows the results of his experiment. Which linear equation best represents the data shown in the table?

• y = 0.1x + 5

• y = 10x + 5

• y = 5x + 5

• y = 0.5x + 5

The line with the equation

y + 1 = -3(x - 5),

contains the point (5, -1)

and has a slope of _______.

• -1

• 1

• -3

• 5