Find the distance between the points 78 58SolutionWe know th

Find the distance between the points (-7,8), (5,-8)

Solution

We know that the distance between the points (x₁ , y₁ ) and ( x₂ , y₂) is [ ( x₂ – x₁)² + ( y₂ – y₁)² ] . Therefore, the distance between the points (-7,8), (5,-8) is [( 5 + 7)² + ( - 8 -8)² ] = [ (12)² + (16)² ] = ( 144+ 256) = 400 = 20 units.