Linear Relationships Test Review

A function whose graph is not a straight line.

• nonlinear function

• interval

• initial value

• rate of change

The slope of a line.

• initial value
• nonlinear function
• constant rate of change
• interval
• function

A relation in which each input, or x-value, has exactly one output, or y-value.

• initial value
• nonlinear function
• constant rate of change
• interval
• function

The value of the output when the input is 0, or the y-intercept of the graph of a line.

• initial value
• nonlinear function
• constant rate of change
• interval
• function

A period of time between two points of time or events.

• initial value
• nonlinear function
• constant rate of change
• interval
• function

Is the relation shown in the table a function?

• Yes

• No

Does the relation {(-5, -3), (7, 2), (3, 8), (3, -8), (5, 10)} represent a function?

• Yes

• No

Mark has a $100 gift card to buy apps for his smartphone. Each week, he buys one new app for $4.99. Write an equation that relates the amount left on the card, y, over time, x.

Function: y=-3x+2

What is the initial value?

Function: y=-3x+2

What is the rate of change?