Choice C, it has the same slope as the given equation without being identical to it like choice a.
W+d=869
w=d-81
plug in
(d-81)+d=869
2d-81=869
+81 both sides
2d=950
÷2 both sides
d=475
dryer cost $475
let's check w=475-81
w=394
475+394=869
869=869
the solution is true :)
It’s c since the line goes down 5 and the y intercept is 3 so it would be y=-5x+3