Please help me solve this!! I'm really struggling with this topic

Write an equation in slope intercept form that is parallel to the following two points: (-1,4) and(1,5)

m = (y2-y1)/(x2-x1)

m = (5-4)/(1-(-1))

m = 1/2

y = mx + b

4 = (-1)(1/2) + b
4 = -1/2 + b
4 + 1/2 = -1/2 + 1/2 + b
4 1/2 = b
or 9/2

y = x/2 + 9/2