Question

Update for the first one

Answer 1

Answer is x+2.5 Hope it helped

Answer 2

y = x + 2.5

Explanation:

slope = (y2-y1)/(x2-x1) where the variables indicate the coordinates of the two points

slope = (2.5-1.5)/(0+1) = 1

equation = y-y1 = m(x-x1)

y - 2.5 = x

y = x + 2.5