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If you're taking 0+4=y^2
It would be y^2=4
And then you take the square root or four which is 2.
So y=2
Answer: f(-9)
Step-by-step explanation:
A function is described in the form of f(x)
Therefore, if this is how a function is stated we have x as the input.
Here, the x is equal to -9
So now:
f(-9) after substitution.
6 / 72 = 13 / z
cross multiply
(6)(z) = (72)(13)
6z = 936
z = 936/6
z = 156 <==