Answer:
Step-by-step explanation:
Given y=2x(Let's call this eqn1) and y=x+4(eqn2)
We can substitute eqn1 in eqn2 to get
2x=x+4
2x-x=4
x=4
Substitute the value x in eqn1
y=2x
y=2(4)
y=8
C. (4, 8)
→Plug in y = 2x into y = x + 4, like so:
y = x + 4
2x = x + 4
→Subtract x from both sides:
x = 4
→Now plug in 4 for x into one of the equations (doesn't matter which one):
y = 2x
y = 2(4)
y = 8
