Question

Write the equation of a line in slope intercept form that passes through the points (0, 7) and (5, 3)

Answer 1

IN order to write the equation of a line, you need the slope and one point...

Answer 2

You need to find the slope:

Answer 3

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

Answer 4

so, the slope is -4/5... then, plug into y = mx + b

Answer 5

(since (0, 7) is one of the points, we know b = 7... the y-intercept is 0,7...)
so, the equation is y = -4/5x + 7

Answer 6

By the way, since it is a multiple choice question, a short cut would be to plug the 2 points into each equation!! Whichever equation works for the 2 points is the solution!

Answer 7

i forgot about plugging it in, thanks mathplane