Question

If the line passing through the points
(a, 1) and (14, 5)
is parallel to the line passing through the points
(8, 7) and (a + 2, 1),
what is the value of a?

Answer 1

parallel lines have the same slope

Answer 2

yes i know they have the same slopes i just cant seem to solve it right

Answer 3

do you know how to find the slope of a line given 2 points on that line?

Answer 4

yes y2-y1/x2-x1

Answer 5

if you already know they have the same slope why can't you set the slopes equal