Please help with this problem!

Which graph represents the linear function below? y-3=1/2(x+2)

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.

Lisette takes an ela exam and got 16 out of 27 questions correct. what percentage of the questions did lisette get correct?