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) }`

• 
  `√(144 + 25)`

• 
  `√(169)`

• 
  `13 \: \: units`