It would be much easier for me to help you pick the correct equation
if you would let me see the list of choices.
Since I can't see any of the choices, I'll just make up a few equations
that have the ordered pair (24, 6) as a solution:
Y = 0.25 x
Y = x - 18
Y = 0.5 x - 6
Y = 0.1 x + 3.6
The answer to that is x=8
X=-1/3 for <span>54x + 18
</span>x=1/3 for <span>18(3x – 1)
</span>x=-1/9 for <span>(6 • 9x) + (6 • 1)</span>
