y=4x and y+x=5

Question

(-4,1)
(1,4)***
(-3,2)
(2,3)

Answer 1

To check which ordered pair satisfies both equations, substitute the values of x and y in each pair into the equations and see if they are true.

Using (1,4):
y=4x -> 4=4(1), so y=4 is true.
y+x=5 -> 4+1=5, so this equation is also true.

Therefore, (1,4) is the solution.