How do you write an equation of the line, in point-slope form, that passes through the two given points (-2,15), (9,-18)?
The answer is:
The point slope form is:
When we plug our given points to this equation:
Now we found the slope of our line. We just need to plug one of the points to the point-slope equation. You can choose any of the given points. Since they are on the same line, final equations will be equivalent.