Question

Fill in the blanks.  You can choose from these choices: same, opposite, reciprocal, x, y, -1, 1,0, similar, numerator. You will not use all the choices

Answer 1

The complete text would be the following:

Parallel lines have the same slope, but different y-intercepts.

Perpendicular lines have opposite reciprocal slopes, which means the product of their slopes is -1.