Question

WILL MEDAL!!!! please please help!!

On which of the following lines does the point (7, 1) lie?

a. y-5x=4
b. y=x-10
c. y=-4x+3
d. y=-x+8

Answer 1

it is D

Answer 2

so all you have to do is sub in the coordinates and see if it works. (7,1) = (x,y) so for example the first one: y - 5x = 4 -> 1-5(7) = 4 -> 1-35 = 4 -> -34 does not equal 4 so the first answer does not work. Just do this with the other three now and see which one works.

Answer 3

Oh, thanks! it is D, thanks to both of you! @jprose and @Rhystic