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March 24, 2017

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use the substitution method to solve the linear system.
9x+6y=3
3x-7y=-26
please show me an example of how to do it.

  • algebra 1 - ,

    what is the slope of the line perpendicular to y= 3x-7?

  • algebra 1 - ,

    If you have a question, go to the top of the page and click on Post a New question. Then type in your question and post it.

  • algebra 1 - ,

    9x+6y=3
    3x-7y=-26
    =============
    Solve one equation for one of the variables in terms of the other; for example, solve equation 1 for y.
    6y = 3-9x and
    y = (3-9x)/6 which I would then reduce to
    y = (1-3x)/2

    then substitute this y for y in equation 2.
    3x -7*[(1-3x)/2] = -26
    3x -(7+21x)/2 = -26

    You see that y has been eliminated. Continue and solve for x, then substitute this value into the other equation and solve for y. Finally, substitute both x and y into one of the equations to make sure those values satisfy the equation. Check my work.

  • algebra 1 - ,

    thanks!:-)

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