Slope - Intercept And Point-Slope Forms Of The Line Worksheet With Answers - Hfcc Math Lab Page 8
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8The line passes through the point (2, 1) with slope of -2 has equation
y
1
2(
x
2)
y
1
2
x
4
y
2
x
5
1
5
19.
m
,
b
.
2
3
1
1
20.
m
, b =-2 since 4
y
x
8 and by solving for y, we obtain
y
x
2
.
4
4
2
2
21.
m
, b =0 since
y
x
0 which is y = mx + b.
3
3
22.
m
0, b =-2 since
y
2 0
x
2 (this is a horizontal line)
.
23. m is undefined (this is a vertical line) and no y-intercept since the line is parallel to
the y-axis.
***************************************************************
NOTE: You can get additional instruction and practice by going to the
following websites:
Many examples explaining in details how to write an equation of a line in
slope-intercept form.
This is a tutorial on how to find the slopes and equations of lines. A review of
the main results concerning lines and slopes and then examples with detailed
solutions are presented.
Revised 11/09
8
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