DISTANCE FORMULA BETWEEN TWO POINTS:
P1 = (-5,4) P2 = (-3,-3)
P1P2 = [tex] \sqrt{ (x2-x1)^{2} + (y2-y1)^{2} } [/tex]
P1P2 = [tex] \sqrt{ (-3 - -5)^{2} + (-3+4)^{2} } [/tex]
P1P2 = [tex] \sqrt{ (-3+5)^{2}+ (-7)^{2} } [/tex]
P1P2 = [tex] \sqrt{( 2)^{2}+ (7)^{2} } [/tex]
P1P2 = [tex] \sqrt{4 + 49} [/tex]
P1P2 = [tex] \sqrt{53} [/tex]
