Question

Calculate the distance between the points F=(-1, 7) and L = (2, – 1) in the coordinate plane.

Give an exact answer (not a decimal approximation).

Answer 1

Distance formula = Distance = SQRT((x2-x1)^2 + (y2-y1)^2)

Distance = sqrt((2- -1)^2 + (-1 -7)^2)

Distance = sqrt(3^2 + -8^2)

Distance = sqrt(9+64)

Distance = sqrt(73)

Answer: √73