Slope and Intercept

Slope and Intercept

 $y=mx+b$  

m: slope
b: y-intercept

Slope

• How steep the line is

• Positive if the graph moves up from left to right

• Negative if the graph moves down from left to right

•  $\frac{\text{rise}}{\text{run}}=\frac{\text{change in y}}{\text{change in x}}$  

y-intercept

• Where the line crosses the y-axis

• Sometimes written as y-int

Multiple Choice

In y = mx + b, what does m represent?

• slope

• y-intercept

Multiple Choice

In y = mx + b, what does b represent?

• slope

• y-intercept

Multiple Choice

What is the SLOPE of y = 5x - 2

• 5

• 2

• -2

Multiple Choice

What is the Y-INTERCEPT of y = 5x - 2

• 5

• 2

• -2