1) Examining the graph, the value of the y-coordinate when x is 1 is:
0 since the curve intercepts the x-axis, as we can see there.
2) Proceeding with this time when the y-coordinate is 3 to find out the value of the x-coordinate:
x = 2
3) Hence, the answers are:
f(1) = 0
f(x) = 3 ⇒ x =2
