What is the equation of the line?

So first y intercept

SO the first part where the line hits the Y axis is 2

So the y intercept is 2 Which leaves 2 choices .

Now from that y-intercept or from any point, find the slope by just rising or running till you reach a point which in this case would be

Y=1/2x+2

2+2 obliviously is 4.