3
ALMultiple Choice

1-1.1 Mathematical Modeling

Question 3 • 2026-27 Mathematical Models with Applications

Imagine that a graph of a function rule intersects the y-axis at some point. What do the coordinates of the intersection indicate?

Answer
A
The function's input when the output is 1.
B
The function's output when the input is 1.
C
The function's input when the output is 0.
D
The function's output when the input is 0.

Explanation

Every point on the y-axis has an x-coordinate of 0. So where a function’s graph intersects the y-axis, the coordinates show the function’s output when its input is 0. This is choice D.

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