If A(x1, y1), B(x2, y2), C(x3, y3), and D(x4, y4) form two line segments, and , which condition needs to be met to prove ? A.

B.

C.

D.

E.

i believe it's a.

i'm not sure on this one, most likely correct.

y/x of point b= y/x of point a

step-by-step explanation:

(i got the same question, this was the correct answer.)

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.

umm you say your want to . but you do know that this is the mathematics.  

o~o