Question

Which statement is true about the graphs of the two lines y = -4/5 x + 2 and y = -1/2x ?

1. The lines are perpendicular to each other because -4/5 and -5/4 are opposite reciprocals of each other.

2. The lines are perpendicular to each other because 2 and -1/2 are opposite reciprocals of each other.

3. The lines are neither parallel nor perpendicular to each other because -4/5 and -5/4 are not opposite reciprocals of each other.

4. The lines are neither parallel nor perpendicular to each other because 2 and -1/2 are not opposite reciprocals of each other.

Answer 1

The lines are perpendicular to each other because –8 and 1/8 are opposite reciprocals of each other.

Explanation:

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Answer 2

The correct answer is 2! Because the lines start off at the top and then cross.