Question

Grades are do today please help

Answer 1

length of PR is
`4√(5)`

Is an isosceles triangle

because PQ is congruent to QR

Explanation:

Calculate length of P(-6,0) R(2,4)

=> apply distance formula

`\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\quad √(\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2)`

`√(\left(2-\left(-6\right)\right)^2+\left(4-0\right)^2)`

`4√(5)`

Calculate length of P(-6,0) Q(-3,4)

`√(\left(-3-\left(-6\right)\right)^2+\left(4-0\right)^2)`

= 5

5(PQ) = 5(QR)