8.9.Find the slopes of the lines that are (a) parallel and (b) perpendicular to the line through the pairof points.(3, 3) and (-5, -5)OA-3335B 0; 0C 1; -1OD -1; 1Determine whether the lines are parallel, perpendicular, skew, or neither.
We know that the equation of the line that pass through the pair of points (3, 3) and (-5, -5) is x = y, so the slope of a paralell line is 1 and a perpendicular line is -1.
