help me please. thank you

Answer:
C
Step-by-step explanation:
The equation of a horizontal line is y = c
where c is the value of the y- coordinates the line passes through
The line passes through (- [tex]\frac{1}{3}[/tex] , 4 ) with y- coordinate 4 , then
y = 4 ← equation of horizontal line
Given equations are
y = 9x² → (1)
y = 4 → (2)
Substitute y = 9x² into (2)
9x² = 4 ( divide both sides by 9 )
x² = [tex]\frac{4}{9}[/tex] → C