Copy of G8MTH_SD_04.21

Slope = (change in y) / (change in x)

Slope = (change in x) / (change in y)

Slope = y + x

Slope = x - y

Identifying the value of y when x is zero

Finding the slope first

Using only positive values of x

Ignoring the rate of change

$63.10 for 5 pounds, $104.12 for 8.25 pounds, $151.44 for 12 pounds

$60.00 for 5 pounds, $100.00 for 8.25 pounds, $150.00 for 12 pounds

$65.00 for 5 pounds, $110.00 for 8.25 pounds, $155.00 for 12 pounds

$70.00 for 5 pounds, $120.00 for 8.25 pounds, $160.00 for 12 pounds

The amount Caroline saves each week

The total amount Caroline has saved

The number of months Caroline saved

The amount Caroline's parents gave her

Sasha earns $36.55 each hour she works.

Sasha earns $27.36 each hour she works.

Sasha earned $25.00 each hour she works.

Sasha earns $21.00 each hour she works.

Sasha earns $21.00 before she begins her hourly work.

Sasha earns $70.00 before she begins her hourly work.

Sasha earns $25.00 before she begins her hourly work.

Sasha earns $136.50 before she begins her hourly work.

5.375

3.25

8.5

13

The y-intercept is the point where the line crosses the y-axis.

The slope is calculated as rise over run.

The y-intercept is always positive.

The slope is always greater than 1.

Find the change in y

Find the change in x

Multiply x and y values

Divide the change in y by the change in x

m = Δy/Δx

m = Δx/Δy

m = y + x

m = x - y

A relationship where the ratio between variables remains constant.

A relationship where the variables increase at different rates.

A relationship that always passes through the y-intercept at -1.

A relationship where the domain is always positive.

1/2

2/3

3/2

1

$45

$25

$50

$60

$45

$25

$50

$60

$25

$50

$75

$100

The rate of change is 2/3, represented by the slope of the line.

The rate of change is 3/2, represented by the y-intercept.

The rate of change is 1, represented by the x-intercept.

The rate of change is 2, represented by the steepness of the curve.