A segment has endpoints M (5, -2) and N (-1, -2) . After a dilation with center (0,0) , M' (10, -4) and N' (-2, -4) . If the scale factor is 3x+2, then which of the following is the value of x?

A) 0
B) 1
C) 2
D) 3

Will medal and fan the best correct answer!

Question

A segment has endpoints M (5, -2) and N (-1, -2) . After a dilation with center (0,0) , M' (10, -4) and N' (-2, -4) . If the scale factor is 3x+2, then which of the following is the value of x?

A) 0
B) 1
C) 2
D) 3

Will medal and fan the best correct answer!

michele_laino · Answer

comparing the point $M$ with $M'$ we get as scale factor the subsequent value:
$s=2$
so we have to solve this equation:
$3x+2=2$

anonymous · Answer

So 3x+2=2 becomes 3x=0 which becomes x=0?

michele_laino · Answer

correct!

anonymous · Answer

Thanks sooooo much! I am thankful you didn't just give a direct answer!

michele_laino · Answer

:)