Answer:
2
Explanation:
Put your finger where the blue line starts (at 0,1) and another where it next intersects 2 whole numbers.
Bring your first finger across and your second down until they meet. You count how many squares each finger took to meet. So that's 1 on the X, 2 on the Y. 2 ÷ 1= 2.
So your answer is two.
Hope this helps. :)