Questions: Functions
Horizontal line test
For each function graphed below, state whether it is one-to-one.
Graph 1 Graph 2 Graph 3
One-to-one? Yes No Yes No Yes No
Graph 4 Graph 5 Graph 6
One-to-one? Yes No Yes No Yes No
Transcript text: Functions
Horizontal line test
For each function graphed below, state whether it is one-to-one.
Graph 1 Graph 2 Graph 3
One-to-one? Yes No Yes No Yes No
Graph 4 Graph 5 Graph 6
One-to-one? Yes No Yes No Yes No
Solution
Solution Steps
Step 1: Understanding the Problem
The task is to determine whether each function graphed is one-to-one. A function is one-to-one if and only if it passes the horizontal line test, meaning no horizontal line intersects the graph at more than one point.
Step 2: Analyzing Graph 1
Graph 1 shows multiple points. A horizontal line can intersect more than one point, indicating that the function is not one-to-one.
Step 3: Analyzing Graph 2
Graph 2 shows a parabola opening upwards. A horizontal line can intersect the parabola at two points, indicating that the function is not one-to-one.