Chapter ISG, Problem 3.1.1.7P

To determine

To calculate the value of $f(-3)$

Answer to Problem 3.1.1.7P

  $f(x)=-4$

Explanation of Solution

Given information: The given function is,

  $f(x)=2x+2$

Graph:

  

Calculation:

Substituting the value of $x=-3$ , to find $f(-3)$ ,

  $f(x)=\{2\times (-3)\}+2$

So,

  $f(x)=-6+2$

On solving,

  $f(x)=-4$

The value of this function can be calculated from graph, by checking the value of f(x) at point x =-3