Question

What is the equation of the line that passes through (-1,-4) and (-2,-1)

Answer 1

y+4=-3(x+1)

Explanation:

You start by calculating the slope which is y1-y2 over x1-x2, which plugging the numbers in, comes out to be -3. Then, taking the point slope formula

(y-y1=m[x-x1]), you just plug the rest of the variables in.