Can someone check this? QRST is a parallelogram. Find x and y. I got :
y-4x=9

y=4x+9

-x+4=y

-x+4=4x+9

-5=5x

x=1 & y=3

Question

Can someone check this? QRST is a parallelogram. Find x and y. I got :
y-4x=9                      

y=4x+9

-x+4=y

 -x+4=4x+9 

-5=5x

x=1 & y=3

k.binks · Answer

attachment

anonymous · Answer

Nope. Since 9=y-4x and  y=-x+4, then 9=-x+4-4x 
which leads to 9=-5x+4  
Solve it and x=-1
Now going back to 9=y-4x  plug x=-1 in 
9=y+4  solve for y and its y=5

anonymous · Answer

or with the other equation with x=-1 which is y=-x+4
y=1+4
y=5

k.binks · Answer

Thanks, I knew I was off but this cleared it up for me

anonymous · Answer

Yea, this problem is a bit tricky.