B
1) The best way to tackle this problem is with the aid of a graph. So let's plot that.
So, considering the first point. We can state that when x=0, we get y=4
so, (0,4)
2) For the second point, we need to go up 3 so 4+3=7
3) Therefore, the answer is 4, and 7 (0,4) , (1,7)