Which statement completes step 5 of the proof? Step 1 is parallel to the y-axis, and is parallel to the x-axis. Step 2 ΔJKL was rotated 90° clockwise to create ΔJ'KL'. Point K did not change position, so it remains point K. Therefore, ΔJKL ≅ ΔJ'KL'. Step 3 is perpendicular to the y-axis, and is perpendicular to the x-axis. Step 4 lies on line f and has a slope of 3. Step 5 ? Step 6 The product of the slopes of and is −1; therefore, lines f and g are perpendicular. lies on line g and has a slope of . lies on line g and has a slope of . lies on line g and has a slope of . lies on line g and has a slope of .