Question

Find BC if B(8,-7) and C1-4,-2).

Answer 1

Using distance formula :

• $\sqrt{(x_2 - x_1) {}^{2} + (y_2 - y_1) {}^{2} }$

• $\sqrt{(8 - ( - 4)) {}^{2} + ( - 7 - ( - 2)) {}^{2} }$

• $\sqrt{(12) {}^{2} + ( - 5) {}^{2} }$

• $\sqrt{144 + 25}$

• $\sqrt{169}$

• $13 \: \: units$