Review of Functions

Function Characteristics

100

Vocabulary word for y values

Range

200

The shape of a graph of a linear function

Line

300

The domain in (-4,0), (5,4), (5, 4), (-9, 12)

{-9, -4, 5}

400

The range values in (-4,0), (3,4), (5, 4), (-9, 12)

{0, 4, 12}

500

Function or not a function?

(-4,0), (3,4), (5, 4), (-9, 12)

Function - domain values do NOT repeat

Evaluating a Function

100

Find f(3) in y = x + 5

8

200

Find f(4) in y = 2x + 1

9

300

Find f(2) in f(x) = -3x

-6

400

Find f(2) in f(x) = 10 - 3x

4

500

Find f(0) in f(x) = 8x - 2x + 1

1

Slope

100

The slope in y = 2x + 1

slope = 2

200

The slope in y = -4x + 1

m = -4

300

The slope from (4, 5) and (10, 6)

1/6

400

The slope from y = 4 - 5x

-5

500

The slope from (-2, 6) and (9, -4)

-10/11

Slope-intercept Form

100

If the slope is 4 and the y-intercept is 2, name the equation in slope-intercept form

y = 4x + 2

200

If the y-intercept is 3 and the slope is -2, name the equation in slope-intercept form

y = -2x + 3

300

The equation for slope-intercept form

y = mx + b

400

When graphing a line from slope-intercept form, you need to graph this point first

y-intercept

500

If you have the ordered pairs (4, 5) and (7, 3) and a y-intercept of 1, name the equation in slope-intercept form

y = -2/3x + 1

Challenge Round

100

It costs $5 per hour to rent a bike plus a flat rate of $25. Write an equation in slope-intercept form to show how much it costs to rent a bike

y =5x + 25

200

Nina earns a flat rate of $400 plus $25 for every pizza she delivers. Write an equation in slope-intercept form to show Nina's salary

y = 25x + 400

300

The direction of the graph of y = -2

left to right

400

In the graph y = 3, name the slope

Zero

500

It costs $6 per hour to rent a paddleboard plus a flat rate of $30. How much would it cost to rent the paddleboard for 4 hours?

$54 for 4 hours