The question is "Find parametric equations for the line with the given properties:

Question

Slope -2, passing through (-10, -20)."
I don't even know where to begin, or what to do. Please help! This is an example problem, not the main homework problem, I just need to know how to do those kinds of problems.

Answer 1

first, look up the definition of Parametric equation. It is a fancy term for something like this:
y=mx+b
m slope is -2, so put in the point (-10,-20) and solve for b

-20=2*(-10)+ b
b=0
y=2x