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ray13971
Dec 5, 2010, 01:35 PM
What is the slope of a line that passes through the origin and the point (-2,1)

Unknown008
Dec 6, 2010, 02:08 AM
If it passes through the origin, you have a second point, (0, 0)

And you can find the slope using:

\frac{y_2 - y_1}{x_2 - x_1}

That is the y coordinates of a point, minus the y coordinates of the other point, divided by the x coordinate of the first point minus the x coordinate of the second point.