Question

What is the slope of a line that passes through the point (−1, 1) and is parallel to a line that passes through (3, 6) and (1, −2)?

Answer 1

Find slope of line that passes through (3, 6) and (1, −2), can you?

Answer 2

Obviously I can't

Answer 3

Do you even know the formula of slope?

Answer 4

take (3,6) = (x1, y1)
and (1, -2) = (x2, y2)
now, slope = (y2 - y1) / (x2 - x1)
substitute the values respectively and u'll have your answer.