Question

how do you find the value of a function from a graph at x = -4? trace x = -4 on the x - axis and find the corresponding y value trace x = -4 on the y - axis calculate the area under the curve at x = -4

Explanation:

Step1: Understanding function graphs

A function \( y = f(x) \) has an \( x - \)axis (independent variable) and \( y - \)axis (dependent variable).

Step2: Locating the value

To find \( f(-4) \), we look for \( x=-4 \) on the \( x - \)axis. Then, we move vertically (parallel to the \( y - \)axis) until we intersect the graph of the function. The \( y - \)coordinate of this intersection point is the value of the function at \( x =-4 \).

For the option “Trace \( X = -4 \) on the \( Y - \)axis”: The \( x - \)value is located on the \( x - \)axis, not the \( y - \)axis.

For the option “Calculate the area under the curve at \( X=-4 \)”: The area under the curve is related to integration (for continuous functions over an interval), not directly to finding the value of the function at a single point \( x=-4 \).

Answer:

Trace \( X = -4 \) on the \( X - \)axis and find the corresponding \( Y \) value