Question

two non vertical lines have slopes m 1 and m2 respectively they lines are parallel id ? and the y-intercepts are unequal

Answer 1

Two lines are parallel when they have the same slope.

For example, the lines y = 2x + 3 and y = 2x + 5 are parallel, because both of them have the slope = 2.

So if the slope of one line is m1 and the slope of the second line is m2, in order to these lines be parallel, we have that m1 = m2 (same slopes)

So the answer is "m1 = m2"