If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation.

6x - y = 1
4x - 3y = -11

Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation.

6x - y = 1
4x - 3y = -11

anonymous · Answer

a. 4(-6x + 1) - 3y = -11
b. 4(6x + 1) - 3y = -11
c. 4x - 3(6x - 1) = -11
d. 4x - 3(-6x - 1) = -11

anonymous · Answer

The simplest substitution would be to solve the first equation for $y$:
$$6x-y=1~~\iff~~y=6x-1$$
So plugging into the second equation you would have
$$\begin{align*}
4x-3\color{red}{y}&=-11\
4x-3\color{red}{(6x-1)}&=-11\

\end{align*}$$

anonymous · Answer

Thanks