Answer:
a) when x = -1, f(x) = 3
b) when f(x) = 1, x = 0
Explanation:
Given:
A linear graph
To find:
a) the value of f(-1)
b) the value of x when f(x) = 1
a) f(-1): this means the value of f(x) when x = -1
To determine the value of f(x) when x = -1, we will trace x = -1 on the graph, to the y axis
On the graph: when x = -1, f(x) = 3
b) To determine the value of x when f(x) = 1, we will trace f(x) = 1 to the x axis
when f(x) = 1, x = 0
