No because the last one is not correct and if you want to text me back if you won't me to do it for you for the first three you can
we have that

Step 1
<u>Find the y-intercept</u>
we know that
The y-intercept is the value of f(x) when the value of x is equal to zero
For 

Point 
Step 2
<u>Find the value of f(x) for
</u>

Point 
Step 3
<u>Graph the point A and B to find the solution</u>
therefore
the answer in the attached figure
I THINK it’s x = ±1/27 or ±8, again I’m not sure if I did the math correct but this is what I got