Ask Question
7 March, 18:39

MaryJo decided to solve the equation 3x-2 = - x-6 by entering each of the expressions into her graphing calculator. To solve the equation as a system, she entered y1 = 3x-2 and y2 = - x-6. When she used the calculator to find the intersection, she found x = - 1 and y = - 5. Show the work to check to see if MaryJo found the correct solution for x to the linear equation.

+1
Answers (1)
  1. 7 March, 20:39
    0
    Note that the problem states that you only need to check the solution she got for x ... so we don't have to worry about y in this case. (YAY)

    To verify MaryJo's answer, simply solve the equation for x:

    3x - 2 = - x - 6

    3x ( + x) - 2 = - x ( + x) - 6

    4x - 2 = - 6

    4x - 2 ( + 2) = - 6 ( + 2)

    4x = - 4

    4x/4 = - 4/4

    x = - 1

    Since this conforms to MaryJo's answer, she did indeed find the correct solution for x.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “MaryJo decided to solve the equation 3x-2 = - x-6 by entering each of the expressions into her graphing calculator. To solve the equation ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers