Question

7. Mis the midpoint of QR and M has
coordinates (-2, 6). Q has coordinates
(8, -10). What are the coordinates of R?
nges to the original content are the responsibility of the instructor.

I need help on number 7 please

Answer 1

Answer:

R(- 12, 22 )

Step-by-step explanation:

Using the midpoint formula

$\frac{1}{2}$(8 + $x_{R}$ ) = $x_{M}$ = - 2

Multiply both sides by 2

8 + $x_{R}$ = - 4 ( subtract 8 from both sides )

$x_{R}$ = - 12

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$\frac{1}{2}$(- 10 + $y_{R}$ ) = $y_{M}$ = 6

Multiply both sides by 2

- 10 + $y_{R}$ = 12 ( add 10 to both sides )

$y_{R}$ = 22

The coordinates of R = (- 12, 22 )