y = mx + c
The equation of a straight line:
\(y = mx + c\).
m is the gradient, c is the y-intercept.
Example
\(y = 3x + 1\):
gradient = 3, y-intercept = 1
\(y = -x + 4\):
gradient = -1, y-intercept = 4
Practice
In \(y = -2x + 5\), what is the gradient?
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