Parallel & Perpendicular Lines Quiz (5 Questions)

1. Line through (0,0) and (2,4). Find slope.

2. True or False: Parallel lines have equal slopes.

3. Line slope = 3. Slope of perpendicular line?

4. Line through (1,2) and (4,8). Is it parallel to line through (0,0) and (3,6)?

5. Give a real-world example using slopes of lines.

Answer Key

1. m=(4−0)/(2−0)=2

2. True

3. −1/3

4. Yes, slopes: 6/3 = 2, 8/3 ≈ 2.67 → slopes not equal → check actual calculation, (1,2)→(4,8) slope = (8-2)/(4-1)=6/3=2 → slopes equal → yes, parallel

5. Roof pitch, roads, ramps, bridges, railways