Functions - Grade 8

Is the graph shown an example of a function?

• Yes

• No

Is the graph an example of a function?

• Yes

• No

What is the output of the function when the input is 0?

Tags

CCSS.HSF.IF.A.2

A function is described by the equation $y=-2x+4$ . What is the output when the input is -2? 

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

The graph represents function A. Function B is represented by the equation $y=2x-3$ . Which best compares the two functions?

• Function A has a greater slope of 7.

• Function A and Function B have the same slope.

• Function B has a greater initial value of -3.

• Function A and Function B have the same initial value.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

What is the input of the function when the output is 3?

Tags

CCSS.HSF.IF.A.2

Which equation describes the function shown in the graph?

• $y=\frac{1}{4}x+3$

• $y=-\frac{3}{4}x$

• $y=-\frac{3}{4}x+3$

• $y=\frac{3}{4}x+3$

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Select the equation with a greater rate of change than the function in the graph.

• $y=\frac{3}{4}x+2$

• $y=x+1$

• $y=-2x-3$

• $y=1.5x+7$

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Margot is saving up to buy a new car. She has $1,300 saved and is adding $150 to her savings every two weeks. What is the initial value of this situation?

Tags

CCSS.HSF.LE.B.5

Filipe started a car wash business with a friend. They wrote an equation to describe their profits for the business $y=-450+25x$ , where x is the number of cars washed, and y is the profit. Select the true statement about this situation. 

• Filipe and his friend charge 450 for every car wash.

• Filipe and his friend spent $25 on supplies for their car wash business.

• Filipe and his friend spent $450 on supplies for their car wash business

• Filipe and his friend started with a profit for their car wash business.

Tags

CCSS.HSF.LE.B.5