Question 21179
Coordinates come in the form (x,y).

If your x is -1, you must plug it into wherever you see it in the equation.

y = -4x + 2
y = -4(-1) + 2

Solving the second line will give the solution.

y = -4(-1) + 2
y = 4 + 2   <<< Negative one times negative four gives us positive four.
y = 6  <<< Add the two together.

Your 'y' coordinate is six, giving you (-1,6).