The equation for line t can be written as y + 4 = 10 7 ( x + 9 ) . Parallel to line t is line u , which passes through the point (-6, -10) . What is the equation of line u ?
Parallel lines have the same slope, so......
y - (-10) = (10/7) [x - ( - 6 ) ] simplify
y + 10 = (10/7) [x + 6 ]
y = (10/7)x + 60/7 - 10
y = (10/7)x + 60/7 - 70/7
y = (10/7)x - 10/7 ......and that's in slope-intercept form
