Question

y=3X - 4
y=X + 4
solve simultaneously

Answer 1

Answer:

3x-y=4

x-y=-4

2x=8

x=4

y=8

Answer 2

Answer:

Correct answer is x = 8.

Step-by-step explanation:

We are given that

y = 3x - 4 ----(1)

y = x + 4 -----(2)

Solving (1) and (2),

3x - 4 = x + 4

3x - x = 4 + 4

2x = 8

x = 8/2

x = 4

Put value of x in eqn.(1) or (2)

y = 3(4) - 4

y = 12 - 4

y = 8

or

y = 4 + 4

y = 8

Hope it will helps.