distance betwen the points (x1,y1) and (x2,y2) is
[tex]D= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} [/tex]
given the points
(7,1) and (-4,5)
[tex]D= \sqrt{(-4-7)^2+(-5-1)^2} [/tex]
[tex]D= \sqrt{(-11)^2+(-6)^2} [/tex]
[tex]D= \sqrt{121+36} [/tex]
D=√157
answer is C
