y = mx + b
"m" is the slope, "b" is the y-intercept (the y value when x = 0)
You need to find "m" and "b"
For lines to be parallel, the slopes have to be the same.
The given line's slope is 1/2, so the parallel line's slope is also 1/2.
y = 1/2x + b
To find "b", you can plug in the point (10, -5) into the equation.
y = 1/2x + b
-5 = 1/2(10) + b
-5 = 5 + b Subtract 5 on both sides to get "b" by itself
-10 = b
y = 1/2x - 10 Your answer is D (you could have just found the slope to get your answer, since all the slopes are different)
