Question

for each graph, decide if the two lines are parallel, perpendicular, or neither

Explanation:

Step1: Recall line - relationship rules

Parallel lines never intersect and have the same slope. Perpendicular lines intersect at a 90 - degree angle and the product of their slopes is - 1.

Step2: Analyze Graph 1

The two lines in Graph 1 intersect at an angle other than 90 degrees. So they are neither parallel nor perpendicular.

Step3: Analyze Graph 2

The two lines in Graph 2 are straight and do not intersect, so they are parallel.

Step4: Analyze Graph 3

The two lines in Graph 3 intersect at a 90 - degree angle, so they are perpendicular.

Step5: Analyze Graph 4

The two lines in Graph 4 intersect at an angle other than 90 degrees. So they are neither parallel nor perpendicular.

Answer:

Graph 1: Neither
Graph 2: Parallel
Graph 3: Perpendicular
Graph 4: Neither