algebra 1

posted by .

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!:-)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    how do you use the substitution method to solve the linear system?
  2. algebra

    Requesting help. (I must reckon, that X is a variable, and y is y-intercept) Q: Try to use the substitution method to solve the the linear system y=3x an y=3x-7. What do you notice?
  3. maths

    use the substitution method to solve the linear system. 1. 3x=9 -x+2y=9 3x/3 = 9/3 x = 3 -x(3)+2y = 9 -3+2y = 9 2y = 12 y = 6 is (3,6) correct?
  4. Linear Equations

    Can you please help solve this equation using the substitution method?
  5. Algebra

    -3x + 2y = 8 x + 4y = -4 use substitution method to solve the linear system.
  6. algebra

    use method of substitution to solve the system of linear equation 3x+4y=3/2 y=2x-1
  7. algebra

    Use the substitution method to solve the linear system. Thanks! s= t+4 2t+s=19
  8. Algebra

    Use substitution method to solve the linear system. Can someone please check if I did this problem right?
  9. Algebra

    Use the substitution method to solve the linear system. 1/8p+3/4q=7 3/2p-q=4 Thanks.
  10. Math 2 questions

    Use the substitution method to solve each linear system: -x+3y+1=0 3x-y+1=0 4x-3y=-13 -2x+y=4 Please help, thanks:):)!!!!

More Similar Questions