Answer:
y = 2x + 9
Step-by-step explanation:
Start with thinking in terms of y = mx + b
First, check for your y-intercept, or where the line crosses the vertical line. This is at y = 9, so 9 is your b term. Then, to find m, find a place where the line crosses a grid square's corner exactly, preferably close to the y-intercept. Count the spaces you need to go up to get to this corner and put it on the numerator (top) of a fraction, and count the spaces you need to go right to do the same, and put that on the denominator. Simplify the fraction if needed. In this case, you should have gotten 2/1 or 4/2, or anything that simplifies down to 2. Put this as your m term in your equation and you're done, because it matches the 3rd option you have.
