Question

The following equation defines a function of x.

f(x)=-2x+3
If (6,n) is an element of the function, what is the value of n?

A) -4 B) -6 C) 0 D)-9

Answer 1

Option D) -9

Explanation:

Here (6 , n) corresponds to an ordered pair solution that is (x , y) so we have the value of x that is 6 but we need the value of y which is f(x) so we insert the value of x into the function to get the value of n like this,

`f(x)=-2x+3\\f(6)=-2(6)+3\\n=-12+3\\n=-9\\`

because f(x) corresponds to y and hence f(6) corresponds to n