Question

Which is the equation of the line that passes through the points (-4, 8) and (1, 3)?

Answer 1

Explanation:

Marina, everyone has a tough time with this type of math problem, just send me a note if you get stuck on these. :P

You're given two points,

P1 = (-4,8) in the form (x1,y1)

P2 = (1,3) in the form (x2,y2) ( I made the forms, so can you )

slope = m

m = (y2-y1) / (x2-x1)

m = (3-8) / ( 1 - (-4))

m = -5 / (1 + 4)

m = -5 / 5

m = -1

now use the point-slope formula

y-y1=m(x-x1)

y-(8) = -1(x-(-4))

y-8 = -1(x+4)

y-8 = -x -4

y = -x-4+8

y = -x +4

That's the equation :P