Answer:
[tex] \red{x = 2}[/tex]
Step-by-step explanation:
Given that,
y = 10 - 9x
Now we have to find the value of x when y is -8.
For that, you have to replace y with -8.
Let us solve it now.
[tex] \rightarrow \: y = 10 - 9x \\ \rightarrow \: - 8 = 10 - 9x[/tex]
Make x the subject in the equation to find the value of x.
[tex] \rightarrow - 8 - 10 = - 9x \\ \rightarrow - 18 = - 9x \: \: \: \: \: \: \: \: \\ \rightarrow \frac{ - 18}{ - 9} = \frac{ - 9x}{ - 9} \: \: \: \: \: \\ \rightarrow 2 = x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
