Question

The graph of a function f is shown below. Find one value of x for which f(x) = - 1 and find f(- 3) .

Answer 1

Given: Graph of a function f.

Required: Value of x for which f(x)= -1 and f(-3).

Explanation:

To find the value of x for which f(x) = -1, observe the graph.

From the graph, y co-ordinate is -1 when x coordinate is 0. That is graph passes through (0,-1).

So

$f(0)=-1$

so for x = 0, f(x) = -1.

Also, observe the fraph, at x= -3, y co ordinate is 5.

So,

$f(-3)=5$

Final Answer:

x=0 for f(x) = -1, and f(-3) = 5.