Question

M(-1,2) is the midpoint of [pq] and p is the point (-2,-4) , Find the coordinates of q

Answer 1

M(-1, 2), p(-2,-4)

x-coordinate:

-1=
`(-2+x)/(2)`

-2= -2+x

x= -2+2

x=0

y-coordinate:

2=
`(-4+y)/(2)`

4= -4+y

y= 4+4

y= 8

∴ q(0, 8)