Question

M(–3, –1) is the midpoint of RS. If S has coordinates (4, 6), what are the coordinates of R?

a.(–10, –8)

b.(–10, 13)

c.(11, 13)

d.(11, –8)

Answer 1

the abscissa midpoint of a segment of extremities (x1,y1) and (x2,y2) is \[x_m = \frac{ x_2 - x_1 }{ 2 }\]

we have x2 and Xm, can you calculate x1 ?

Answer 2

it would be A
follow the formula for midpoint