Answer:
x = 7. Answer Choice A
Step-by-step explanation:
We first use the point slope formula to find an equation for this line.
[tex]y-14=\frac{21}{2} (x-9)[/tex]. We can simplify this to [tex]y=\frac{21}{2}x-\frac{161}{2}[/tex].
We can substitute in -7 for the y value and continue to solve for x.
[tex]-7=\frac{21}{2}x-\frac{161}{2}[/tex]
Solving this equation, we find that x = 7.
