Practice Comparing Functions

Is this a function

• yes

• no

is this a function

• yes

• no

is this a function

• yes

• no

Which correctly explains whether or not the graph above is a function

• Yes, the graph passes the horizontal line test

• No, The graph does not have a constant rate of change

• Yes, the line passes the vertical line test

• No, each input on the graph has more than one output

• (2,1)

• (12,7)

• (-8,8)

• (-3,-4)

The Smith's are hiring painters , and the painting companies they've narrowed it down to charge based on the number of square feet. Company A charges 2.25 per square foot. Company B's rates are shown in the table above: which company would give their family the lowest cost per square foot?

• Company A

• Company B

The gas mileage of the Caiden's vehicle can be represented by the equation y= 16.2x where x is the number of gallons of gas and y is the number of miles. Ethan's gas mileage is shown in the graph above.

Who's vehicle gets the higher rate of miles per gallon?

• the graph

• the equation

Which correctly describes the graph above?

• non-linear; not a function

• non-linear, function

• linear, function

• linear, not a function

Which of the following equations represents a linear function?