Question

If a= (-2,-4) and B (-8,4) what is length of ab

Answer 1

Length of ab = 10 units

Explanation:

X1 = -2, X2 = -8

Y1 = -4, Y2 = 4

`\sqrt{(x2 - x1)^(2) + (y2 - y1)^(2) } \\\sqrt{(-8 -(-2))^(2) + (4-(-4))^(2) } \\\sqrt{(-8+2)^(2) + (4+4)^(2) } \\\sqrt{6^(2) +8^(2)} \\√(36+64) \\√(100) \\10`