Question

Solve the following by substitution:
y = x
5x = 12y

Answer 1

it's a false expression

Answer 2

why?

Answer 3

coz you get
5y=12y which is false or just zero

Answer 4

I said it was 0,0 and I got it wrong

Answer 5

hmm, try using Cramer's rule

Answer 6

lets say
x-y=0
5x-12y=0
then\[\left[\begin{matrix}1 & -1 \\ 5 & -12\end{matrix}\right]\left(\begin{matrix}x \\ y\end{matrix}\right)=\left(\begin{matrix}0 \\ 0\end{matrix}\right)\]

Answer 7

dam nikga nd i got it wrong lol.......

Answer 8

Ax=b\[x=A ^{-1}*b\]

Answer 9

my teachz dum

Answer 10

lol

Answer 11

\[\left(\begin{matrix}x \\ y\end{matrix}\right)=\left(\begin{matrix}0 \\ 0\end{matrix}\right)\]