Question

Write the equation of a line in slope-intercept form that has a slope of -2 and passes through the point (2, -8).

Answer 1

y = A x + B

A = slope = -2

y = -2 x + B

now sub the point

-8 = -2 * 2 + B
-8 = -4 + B
B = -4

y = -2x -4

Answer 2

thats the idea, now you can also plug it into a formula
\[y-y_1 = m(x-x_1)\]
\[y+8 = -2(x-2)\]
\[y =-2x -4\]