6.5 Slope-Point Form of a Linear Function:
Slope-Point Form
If you can not find the y-intercept you must
use this formula.
m = y2 - y1
x2 - x1
y2-y1
x2-x1
-3
-1m=
2--1
m= 2
3
m=
(y - y1) = m(x - x1)
(y - y1) = m(x - x1)
Describe the graph of a linear function with
the following equation: y - 2 = 1 (x + 4)
(y - y1) = m(x - x1)
3
(y - y1) = m(x - x1)
Write an equation in Slope-point form for this line:
b) Write the equation in slope - int form:
Finding an equation of a Linear Function Given 2 points:
(y2 - y1) = m(x2 - x1)
Writing an Equation of a line That is Parallel or Perpendicular to a
Given Line:
Write an equation for the line (in slopepoint form) that passes through R(1,-1) (y2 - y1) = m(x2 - x1)
and is:
A) Parallel to the line y = 2x - 5
3
B) Perpendicular to the line y = 2x - 5
3
(y - y1) = m(x - x1)
P. 372-374 #4ace,5,6(Graph paper), 9,11cd,12,14,18*,19