Chapter 11.5, Problem 59MR

To determine

To solve the function by graph $f(x)=-2\sqrt{x}$

Answer to Problem 59MR

  $\begin{array}{l}\left(1,-2\right)\\ \left(4,-4\right)\\ \left(9,-6\right)\\ \left(16,-8\right)\end{array}$

Explanation of Solution

Given:

Given function

  $f(x)=-2\sqrt{x}$

Calculation:

In order to solve the function $f(x)=-2\sqrt{x}$ .

As we know that $f(x)=y$ or $y=-2\sqrt{x}$

X	$y=-2\sqrt{x}$	(x,y )
1	$y=-2(\sqrt{1})=-2$	(1,-2)
4	$\text{Y}=-2(\sqrt{4})=-4$	(4,-4)
9	$\text{Y}=-2(\sqrt{9})=-6$	(9,-6)
16	$Y=-2(\sqrt{16})=-8$	(16,-8)

  

  $\begin{array}{l}firstwedrawatabletoplotcoordinates(x,y)\text{}after\text{}\text{}\\ drawingatabl{e}_{}solvethefunctiongiven\\ f(x)=-2\sqrt{x}ory=-2\sqrt{x}\\ puttingvaluesof\text{}xandy\\ andwiththehelpofcoordinateswedrawthegraph\end{array}$

Thus, the solution is correct.