Brian O. answered • 01/13/16
Tutor
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Effective ways to learn math and Chinese
Use the slope-intercept equation y = mx + b
We have y = -3x + b
With (2, -1), we also have -1 = -3(2) + b
Therefore b = 5
The line equation y = -3x + 5
This is a straight line passing through a point at (2, -1) and the y-intercept at y=5.
