intercept form

Question

How do I find the slope intercept equation of a line if I know two points of the line are (-2,0) and (0,-2)?

Answer 1

The best way to get a good idea of this is to graph the line. Here is the graph.

 

We know that the slope is the rise over the run which is -2/2 or -1

we can also see from the graph that the y intercept is located at -2

The equation for a line is y=mx+b where m equals the slope and b equals the y intercept.

Plug in the values for this line and we get y=-x-2