Chapter 3: Problem 34
Find the ordered pair solutions, given the set of \(y\) -values. $$ y=-34 x+2 ;\\{0,2,4\\} $$
Short Answer
Expert verified
Ordered pairs are \(\left(\frac{1}{17}, 0\right), (0, 2), \left(-\frac{1}{17}, 4\right)\).
Step by step solution
01
Understanding the Problem
We are given a linear equation \(y = -34x + 2\) and a set of \(y\)-values \(\{0, 2, 4\}\). The task is to find ordered pairs \((x,y)\) that satisfy the equation for each \(y\)-value.
02
Solve for \(x\) when \(y = 0\)
Substitute \(y = 0\) into the equation \(y = -34x + 2\): \(0 = -34x + 2\). Solve for \(x\): Subtract 2 from both sides: \(-2 = -34x\).Divide both sides by -34 to isolate \(x\): \(x = \frac{-2}{-34} = \frac{1}{17}\).The ordered pair is \(\left(\frac{1}{17}, 0\right)\).
03
Solve for \(x\) when \(y = 2\)
Substitute \(y = 2\) into the equation \(y = -34x + 2\): \(2 = -34x + 2\). Solve for \(x\): Subtract 2 from both sides: \(0 = -34x\).Since \(0 = -34x\), divide both sides by -34:\(x = 0\).The ordered pair is \((0, 2)\).
04
Solve for \(x\) when \(y = 4\)
Substitute \(y = 4\) into the equation \(y = -34x + 2\): \(4 = -34x + 2\). Solve for \(x\): Subtract 2 from both sides: \(2 = -34x\).Divide both sides by -34 to isolate \(x\):\(x = \frac{2}{-34} = -\frac{1}{17}\).The ordered pair is \(\left(-\frac{1}{17}, 4\right)\).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Ordered Pairs
In the world of mathematics, an ordered pair is a fundamental concept that represents a set of two numbers:
- The first number is known as the 'x-coordinate'.
- The second number is known as the 'y-coordinate'.
Solving for X
To solve for \( x \) in a linear equation, you need to isolate the variable \( x \) on one side of the equation. This process is straightforward but requires careful manipulation of the equation.Suppose you start with an equation like \( y = -34x + 2 \). The first step to solving for \( x \) is substituting a known value for \( y \). For instance, if \( y = 0 \), your equation becomes \( 0 = -34x + 2 \).
- First, move any constants to the other side by subtracting or adding them from both sides. So, subtract 2 from both sides, resulting in \( -2 = -34x \).
- Next, divide each side by the coefficient of \( x \) (which is -34 in this case) to isolate \( x \). This gives \( x = \frac{-2}{-34} = \frac{1}{17} \).
Algebraic Substitution
Algebraic substitution is a method used to find the value of one variable by substituting a known value into an equation. In the context of this exercise, substitution allows us to take a given \( y \)-value and input it into the equation \( y = -34x + 2 \) to solve for \( x \). With our previous example where \( y = 2 \), substitution turns the equation into \( 2 = -34x + 2 \). This simplifies our problem into a basic algebraic equation that can be solved for \( x \).
- This involves isolating \( x \) by once again moving constants and dividing by coefficients, a process we explored in depth in the solving for \( x \) explanation.
- Substitution simplifies more complex equations by transforming them into simpler ones that are much easier to manage.
- Moreover, it points out the pivotal role that is played by choosing the right values for variables while solving linear equations.