Question

How many solutions does y=x+4 and y=2x+4 have?

Answer 1

x = 0

Explanation:

y = x + 4 and y = 2x + 4

Let's solve

x + 4 = 2x + 4

-x + 4 = 4

-x = 0

x = 0

So, there is only one solution is x = 0

Answer 2

The answer is 1 solution.

The two lines have the same y-intercept, and therefore, that’s one solution there. But because the line will never cross other than at y=4, the two equations will only have 1 solution.
Hope this helped!