Question

Point Q is the midpoint between points P and R on a number line. If the coordinate of point Q is 6 and the coordinate of point P is -5, what is the coordinate of point R? Group of answer choices

Answer 1

`R = 17`

Explanation:

Given

`P = -5`

`Q = 6`

Midpoint: Q

Required

Determine R

Since Q is the midpoint, then

`Q = (1)/(2)(P + R)`

Substitute values for P and Q

`6 = (1)/(2)(-5 + R)`

Multiply both sides by 2

`12 = -5 + R`

Add 5 to both sides

`12 + 5 = -5 + 5 + R`

`17 = R`

`R = 17`