SLOPES
Algebra
Example:
Determine the slope of the line whose equation is 2x + 3y = 6 and whose
y-intercept is (0,2).
Solution:
y = mx + b
2x + 3y = 6 Write in standard form.
3y = 6 - 2x
3y = -2x + 6
y = -2x + 6
3
y = -2/3x + 2
m = -2/3
Example:
Plot the graph of the following linear function. Determine the x-intercept, the y-intercept,
and the slope.
7x + 3y = 21
Solution:
y = mx + b
y = (-7/3)x + 7
x-intercept = 3
y-intercept = 7
Slope = -2.333
MA-02
Page 88
Rev. 0
