Question

Find the value of b so that the slope of the line passing through the points A (1,b) and B (-4,-10) is 2

Answer 1

if by slope you mean gradient:
Y=MX+c
-10=2×-4+C
-10=-8+C
-2=C

Y=MX+c
b=2×1-2
b=2-2
b=0