Worked examples
Two examples
Example 1
A graph goes through (−3, 1), (1, 4) and (3, −2). What is f(1)?
- Find x = 1, go to the graph, and read the y-value.
Answer: 4
Example 2
On the same graph, between x = 1 and x = 3, is f rising or falling?
- Left to right, y goes from 4 down to −2.
Answer: Falling
Where this is taught: Quiz 41: Functions, “Matching a graph to its rule”
The drill
Ten problems
How many:
Type your answer, or tap it, for each problem, then press Check my answers at the bottom.Write your answer on the line, or circle it. The answer key, with the reasoning, is on the last page.