The figure above is the graph of a 11 functionfx Use the fig

The figure above is the graph of a 1-1 functionf(x). Use the figure to find the following:
1.f?1(?5)=
2.f?1(?4)=

Solution

1. draw a line parallel to x-axis at y=-5 where it will intersect the curve,drop a perpendicular to x-axis from that point we get f-1(-5)=-2 2.draw a line parallel to x-axis at y=-4 where it will intersect the curve,drop a perpendicular to x-axis from that point we get f-1(-4)=1