Slope-intercept form:
y = mx + b
"m" is the slope, "b" is the y-intercept (the y value when x = 0) or (0,y)
When lines are parallel, their slopes have to be the SAME.
Since the given line's slope is -1/2, the parallel line's slope is also -1/2
y = -1/2x + b
To find "b", plug in the point (2, -2) into the equation
y = -1/2x + b
-2 = -1/2(2) + b
-2 = -1 + b Add 1 on both sides
-1 = b
y = -1/2x - 1
