Find the equation of the straight line joining each of the following pairs of points (a) (0, 0) and (1,-1)

2 Answers

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lfryerda | High School Teacher | (Level 2) Educator

Posted on

If you have more than one question, you need to make separate posts.

To find the equation of a line, you need to have the slope of the line and a point on the line.

The slope is found using the slope formula:





Now sub in the point and slope into the equation y=mx+b to get:



`-1=-1+b`   move -1 to left side



This means the equation of the line is `y=-x` .