1) f(0) means to find y value when x= 0
x=0, y=2, so f(0) =2
2) f(x) = 0
y=0,x=?
When y=0, x=4
3) f⁻¹(0),
This is an inverse function of f(x),
that means that for f⁻¹, that values of x become y, and values of y become x.
f⁻¹(0)
"0" is y from the graph, when y=0, x=4, so
y=0, f⁻¹(0) = 4
4) f⁻¹(x)=0,
means that on this graph we need x=0, y=2,
so f⁻¹(2)=0,
x=0
For function we had
x=0, y=2
x=4, y=0
For f⁻¹ inverse function we have (x becomes y, and y becomes x)
x=2, y=0
x=0, y=4
