Chapter 7: Problem 16
Find four solutions of each equation. Show each solution in a table of ordered pairs. $$y=3 x+1$$
Short Answer
Expert verified
The ordered pairs are (0, 1), (1, 4), (2, 7), (3, 10).
Step by step solution
01
Understanding the Equation
The equation given is a linear equation of the form \( y = mx + c \), where \( m = 3 \) and \( c = 1 \). This describes a straight line where \( y \) is calculated based on \( x \). Our goal is to find four different pairs of \( (x, y) \).
02
Select Values for x
Choose four distinct values for \( x \) to find corresponding \( y \) values. For simplicity, let's choose \( x = 0, 1, 2, 3 \).
03
Calculate y for Each x
Use the equation \( y = 3x + 1 \) to find \( y \) for each chosen \( x \):- For \( x = 0 \), \( y = 3(0) + 1 = 1 \).- For \( x = 1 \), \( y = 3(1) + 1 = 4 \).- For \( x = 2 \), \( y = 3(2) + 1 = 7 \).- For \( x = 3 \), \( y = 3(3) + 1 = 10 \).
04
Present Solutions as Ordered Pairs
List the solutions as ordered pairs \((x, y)\): - When \( x = 0 \), \( y = 1 \), so the ordered pair is \((0, 1)\).- When \( x = 1 \), \( y = 4 \), so the ordered pair is \((1, 4)\).- When \( x = 2 \), \( y = 7 \), so the ordered pair is \((2, 7)\).- When \( x = 3 \), \( y = 10 \), so the ordered pair is \((3, 10)\).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Ordered Pairs
In mathematics, an ordered pair is a fundamental concept used to designate a pair of related numbers, usually expressed in parentheses like this: \(x, y\). The order is significant since the first element generally represents the horizontal position on a graph (the x-coordinate), while the second element denotes the vertical position (the y-coordinate). In our exercise, we have identified ordered pairs based on the linear equation \(y = 3x + 1\).**Understanding Ordered Pairs in Our Exercise**
- We choose various x-values to see what y-values they produce as outputs.
- By evaluating the equation at each x-value, we obtain corresponding y-values, and these form our ordered pairs.
Graphing Lines
Graphing lines involves plotting points in the plane based on ordered pairs and then connecting these points to form a straight line. Since our equation \(y = 3x + 1\) is linear, its graph will be a straight line.**Steps to Graph a Line**- **Plot the Ordered Pairs**: Start by determining several ordered pairs from the equation as done in the original exercise. Our pairs are \(0, 1\), \(1, 4\), \(2, 7\), and \(3, 10\).- **Mark Each Point on the Graph**: For each ordered pair, locate the corresponding x-coordinate along the horizontal axis and the y-coordinate along the vertical axis. Place a point where these coordinates meet.- **Draw the Line**: After plotting all points, take a ruler and draw a straight line passing through these points. The accuracy of these steps ensures the geometric representation of the equation is correct.Graphing is a powerful visual tool that not only shows the solution set but also indicates important characteristics like slope and intercept.
Finding Solutions
Finding solutions to a linear equation involves determining the set of all possible ordered pairs that satisfy the equation. For the equation \(y = 3x + 1\), each solution is an ordered pair that makes the equation true.**How to Find Solutions**
- Select any x-value of your choice. There are infinite possibilities, but choose manageable numbers like 0, 1, 2, etc.
- Substitute this x-value into the equation to compute the matching y-value.
- Record this combination as an ordered pair.