Answer:
see explanation
Step-by-step explanation:
given
y = 3x² + 4 ( isolate the term in x by subtracting 4 from both sides )
y - 4 = 3x² ( divide both sides by 3 )
[tex]\frac{y-4}{3}[/tex] = x² ( take the square root of both sides )
[tex]\sqrt{\frac{y-4}{3} }[/tex] = x, or
x = [tex]\sqrt{\frac{y-4}{3} }[/tex]
