Question

If y=2/3x+1, what is the value of x when y=9?

Answer 1

Calculating the value of x in this equation for y = 9, we have:

$\begin{gathered} y=\frac{2}{3}x+1 \\ 9=\frac{2}{3}x+1 \\ \frac{2}{3}x=8 \\ \frac{x}{3}=4 \\ x=3\cdot4 \\ x=12 \end{gathered}$

So the value of x is 12.