Flip and pair: condition with conclusion

Exercise and reference answers

Matching pairs

1. A

   Equal slopes

   B

   parallel

2. A

   Slopes multiply to −1

   B

   perpendicular

3. A

   Slope AB = slope BC

   B

   collinear

4. A

   Slope zero

   B

   horizontal line

5. A

   Slope undefined

   B

   vertical line

Explanation