What is the slope of the line?

y + 1 = 3 (x - 4)

A. 1/3

B. - 4/3

C. - 3/4

D. 3

y+1=3 (x-4)

Multiply the bracket by 3

y+1=3x-12

Follow y=mx+b Move + 1 to the other side. Sign changes from + 1 to - 1

y+1-1=3x-12-1

y=3x-13

Slope=m = 3

b = y-intercept=-13

Answer: Slope=m=3 - D.