SLOPE OR GRADIENT 1

Find the slope of a line which passes through (-3, -4) and (18,-11)

Solution

x₁ = -3,  y₁ =-4,  x₂ = 18,  y₂ = -11

m = y2 –y1

        x2 – x1

m =   -11 –(-4)

          18 –(-3)

m =   -11 + 4

          18 + 3

m =    - 7

          21

Hence the slope is -7/21

TRY THIS...................................

Find the slope of a line which passes through (-1, -4) and (4,-15)