/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 4 A function is given algebraicall... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

A function is given algebraically by the formula \(f(x)=\) \((x-4)^{2}+3 .\) Complete these other ways to represent \(f:\) (a) Verbal: "Subtract \(4,\) then _________ and _________ (b) Numerical: $$\begin{array}{|c|c|} \hline x & f(x) \\ \hline 0 & 19 \\ 2 & \\ 4 & \\ 6 & \\ \hline \end{array}$$

Short Answer

Expert verified
(a) square the result and add 3; (b) 7, 3, 7.

Step by step solution

01

Verbal Representation

To construct the verbal representation, interpret the expression \((x-4)^2 + 3\). First, you subtract 4 from the input \(x\). Then, square the result. Finally, add 3 to the squared result. The completed verbal description is: "Subtract 4, then square the result and add 3."
02

Understanding the Numerical Representation

To complete the numerical representation, we need to substitute the given values of \(x\) into the function \( f(x) = (x-4)^2 + 3 \) and calculate each output (\(f(x)\)). We are completing the values that are missing in the table.
03

Calculate for \(x = 2\)

Substitute \(x = 2\) into the function: \( f(2) = (2-4)^2 + 3\) \( = (-2)^2 + 3\) \( = 4 + 3\) \( = 7\). So, for \(x = 2\), \(f(x) = 7\).
04

Calculate for \(x = 4\)

Substitute \(x = 4\) into the function: \( f(4) = (4-4)^2 + 3\) \( = 0^2 + 3\) \( = 0 + 3\) \( = 3\). So, for \(x = 4\), \(f(x) = 3\).
05

Calculate for \(x = 6\)

Substitute \(x = 6\) into the function: \( f(6) = (6-4)^2 + 3\) \( = 2^2 + 3\) \( = 4 + 3\) \( = 7\). So, for \(x = 6\), \(f(x) = 7\).

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Verbal Representation
The verbal representation of a function means describing the steps you take to evaluate it using words instead of numbers or algebraic symbols. For the function given, the algebraic form is \[ f(x) = (x-4)^2 + 3 \] In words, you would describe this process sequentially. Firstly, you "subtract 4" from your input value, which is the number you are evaluating the function at. Next, "square the result," which means multiplying the resulting number by itself. Finally, "add 3" to the squared value. This sequence is a step-by-step oral or written instruction for how to generate the output from any input value.
Numerical Representation
The numerical representation of a function is shown through a table of input-output pairs. In our example, the task is to fill in the missing outputs for the function \[ f(x) = (x-4)^2 + 3 \] by substituting various values of \( x \) in the table. This representation shows exactly what number each input maps to as an output. - For \( x = 0 \), \( f(x) = (0-4)^2 + 3 = 19 \).- For \( x = 2 \), substitute into the function to get \( f(2) = (2-4)^2 + 3 = 7 \).- For \( x = 4 \), follow the calculation as \( f(4) = (4-4)^2 + 3 = 3 \).- Lastly, for \( x = 6 \), \( f(6) = (6-4)^2 + 3 = 7 \).These calculations complete the table and provide a clear picture of how the inputs relate to the outputs.
Algebraic Representation
An algebraic representation of a function involves expressing the relationship between variables using algebraic symbols and operations. The function in our example is given as \[ f(x) = (x-4)^2 + 3 \]. In this form, the expression shows how the output, \( f(x) \), relates to the input, \( x \). - The operation \( (x-4) \) indicates a shift. You subtract 4 from \( x \), which is the base operation.- The square operation, \((x-4)^{2}\), represents a "spread" or modification that changes the shape of the graph taking inputs.- Adding 3 at the end, \(+ 3\), translates the output vertically in the graph by 3 units.This algebraic representation gives a comprehensive, symbolic description that is powerful and versatile, especially for graphing or further algebraic manipulation.
Function Evaluation
Function evaluation is the process of finding the output of a function for a particular input. In simple terms, when you "evaluate a function," you're plugging in a number into the function to see what result it gives back. Using the function \[ f(x) = (x-4)^2 + 3 \], let's see how you evaluate it:
  • Choose a value for \(x\), such as \(x = 2\).
  • Substitute into the function: \( f(2) = (2-4)^2 + 3\).
  • Calculate: First, perform the inner operation \(2-4\) to get \(-2\).
  • Next, square the result: \((-2)^2 = 4\).
  • Finally, add 3 to obtain the output: \(4 + 3 = 7\).
This evaluation for different \(x\) values helps to verify the function's behavior and can be particularly useful when understanding how the function maps each input to its corresponding output.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Suppose you have to solve a linear system with five equations and five variables without the assistance of a calculator or computer. Which method would you prefer: Cramer's Rule or Gaussian elimination? Write a short paragraph explaining the reasons for your answer.

Find the complete solution of the linear system, or show that it is inconsistent. $$\left\\{\begin{array}{r} x+y+z+w=0 \\ x+y+2 z+2 w=0 \\ 2 x+2 y+3 z+4 w=1 \\ 2 x+3 y+4 z+5 w=2 \end{array}\right.$$

Find the inverse of the matrix. $$\begin{aligned} &\left[\begin{array}{llll} a & 0 & 0 & 0 \\ 0 & b & 0 & 0 \\ 0 & 0 & c & 0 \\ 0 & 0 & 0 & d \end{array}\right]\\\ &(a b c d \neq 0) \end{aligned}$$

Use the definition of determinant and the elementary row and column operations to explain why matrices of the following types have determinant \(0 .\) (a) A matrix with a row or column consisting entirely of zeros (b) A matrix with two rows the same or two columns the same (c) A matrix in which one row is a multiple of another row, or one column is a multiple of another column

(a) If three points lie on a line, what is the area of the "triangle" that they determine? Use the answer to this question, together with the determinant formula for the area of a triangle, to explain why the points \(\left(a_{1}, b_{1}\right)\) \(\left(a_{2}, b_{2}\right),\) and \(\left(a_{3}, b_{3}\right)\) are collinear if and only if $$\left|\begin{array}{lll} a_{1} & b_{1} & 1 \\ a_{2} & b_{2} & 1 \\ a_{3} & b_{3} & 1 \end{array}\right|=0$$ (b) Use a determinant to check whether cach set of points is collinear, Graph them to verify your answer. (i) \((-6,4),(2,10),(6,13)\) (ii) \((-5,10),(2,6),(15,-2)\)

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.