Answer:
f(4) = 3
When f(x) = 4, x = -1
Step-by-step explanation:
f(4) states that x co ordinate= 4. We need to find the y -co ordinate when x =4;
From the graph, when x = 4 , f(4) = 3
When f(x) = 4 , the x - co ordinate is -1
