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Consider the following functions. Find four ordered pairs that satisfy the function

Consider the following functions. Find four ordered pairs that satisfy the function-example-1
User Amer Hukic
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1 Answer

3 votes

Since the function f(x) is


f(x)=\sqrt[]{x-7}

Since there is no square root for negative numbers, then


x-7\ge0

We will solve it by adding 7 to both sides


\begin{gathered} x-7+7\ge0+7 \\ x\ge7 \end{gathered}

Then we can choose values of x from 7 and greater

Let x = 7


\begin{gathered} f(7)=\sqrt[]{7-7} \\ f(7)=\sqrt[]{0} \\ f(7)=0 \end{gathered}

The 1st ordered pair is (7, 0)

Let x = 11


\begin{gathered} f(11)=\sqrt[]{11-7} \\ f(11)=\sqrt[]{4} \\ f(11)=2 \end{gathered}

The 2nd ordered pair is (11, 2)

Let x = 8


\begin{gathered} f(8)=\sqrt[]{8-7} \\ f(8)=\sqrt[]{1} \\ f(8)=1 \end{gathered}

The 3rd ordered pair is (8, 1)

Let x = 16


\begin{gathered} f(16)=\sqrt[]{16-7} \\ f(16)=\sqrt[]{9} \\ f(16)=3 \end{gathered}

The 4th ordered pair is (16, 3)

The 4 ordered pairs are (7, 0), (8, 1), (11, 2), (16, 3)

User Navneet Singh
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