Post on 28-Nov-2014
description
Equations of Linear Functions
Equations of Linear Functions
Slope-Intercept Form
Point-Slope Form
y=mx+b
y-y1 =m(x+x1)
Two-point Form
Intercepts Form
How do they function?
The Slope-Intercept Form. If the graph of a linear function y has slope m and y-intercept b, then its equation is y=mx+b
Let’s have some example:
1. m = 3, b = -1
2. m = -2, b =
3. m = 2, b = 0
Let’s Practice
m= -1 , b= 1/2
Answer this orally:
y= -x + 1/2m= -5 , b= -3/2y= -5x - 3/2m= 1/2 , b= 6y = 1/2x + 6m= -1/3 , b= 3y= -1/3x + 3m= 3/2 , b= -2y= 3/2x - 2