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Find gradient of a line from its equation (#381)
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Practice
Find gradient of a line from its equation (#381)
Rearrange to
y
=
m
x
+
c
y = mx + c
y
=
m
x
+
c
or use
m
=
−
a
/
b
m = -a/b
m
=
−
a
/
b
from
a
x
+
b
y
+
c
=
0
ax+by+c=0
a
x
+
b
y
+
c
=
0
.