Question

The point (-3, - 5) is on the graph of a function. Which equation must be true regarding the function? A. f(-3) = -5B. f(-3, -5) = -8C. f(-5) = -3D. f(-5, -3) = -2

Answer 1

SOLUTION

The correct option is A

Points with coordinates (x,y) on a graph can also be expressed thus:

$f(x)=y$

So with the above explanation, we can answer the question.

The point (-3,-5) on the graph means that x=-3 and y=-5

So it can be expressed as a function in the form:

$\begin{gathered} f(x)=y \\ x=-3\text{ and y=-5} \\ f(-3)\text{ =-5} \end{gathered}$

The correct option is A