Question

When are two distinct nonvertical lines parallel?

Answer 1

Answer:

a)  when the slopes are equal

Step-by-step explanation:

The slopes of lines can be used to define the nature of lines.

Two parallel lines have equal slopes and the product of slopes of perpendicular lines is -1.

Hence, we can conclude that two distinct non-vertical lines parallel when

a)  when the slopes are equal ..

So, option a is correct ..