Two numbers total 39 and hav a difference of 11

Draw the line of reflection that reflects △abc onto triangle δ a'b'c'

For the function, f(x) = -5x 2, find f(-4).

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes