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    Math: Elimination and substitution methods

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    Explain what the domain and range are of a function. Next, select an exercise between 13 and 36, inclusively, on pages 500 -501 of section 7.2. Find the domain of your selected function while showing your work, and explain the process.
    f(x)=2x+1

    Show how to solve it using the substitution method, and explain this process.
    Additionally, how do you know what the solution is when graphing a system of equations?

    9x-2y= - 6
    7x+8=y

    3. Show how to solve it using the elimination method, and explain this process.
    Y=5 - 4X
    2X-3Y=13

    © BrainMass Inc. brainmass.com October 10, 2019, 3:04 am ad1c9bdddf
    https://brainmass.com/math/graphs-and-functions/math-elimination-substitution-methods-405878

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    Week 5 DQ #2
    Explain what the domain and range are of a function. Next, select an exercise between 13 and 36, inclusively, on pages 500 - 501 of section 7.2. Find the domain of your selected function while showing your work, and explain the process.
    15.) f(x)=2x+1
    Solution:
    In a nutshell, domain refers to all possible values of x that the function can take, while range refers to all possible values of y that the function can take.
    The easiest way to find the domain and range is to draw a function and to look at all possible values in the x-axis and all possible values in the y-axis. Below is how the function you chose look like:

    From the graph, you can see that x can take any value and y can also take any value. Therefore the range and domain are as follows:
    Domain: -infinity ≤ x ≤ + ...

    Solution Summary

    How to solve simultaneous equations by using elimination and substitution are determined.

    $2.19