Question

The graph represents a functional relationship.

On a coordinate plane, a straight line with a negative slope begins at point (1, 3), crosses the x-axis at (4, 0), and exits the plane at (18, negative 14).

Which value is an input of the function?

–14
–2
0
4

Answer 1

In the context of a function, the input values are typically the x-values from the graph of the function.

The graph you've described is a straight line that exits the plane at (18, -14) after crossing the x-axis at (4, 0). The x-values (inputs) in this case include:

- The x-coordinate at the x-axis crossing (4)
- The first point of the line (1)
- The last point on the line (18)

Among the given options (–14, –2, 0, 4), the value that represents an input of the function is **4**, as it corresponds to the x-coordinate where the line crosses the x-axis.