algebra

posted by .

solve the systems of equations by graphing
2x-y=1
8x-4y=+8

  • algebra -

    2X-Y=1. (0,-1), (1,1)

    8X-4Y=8. (0,-2), (1,0)
    The solution of the two equations is the point where their graphs intersect.
    The graph using the above points showed that the lines are parallel and
    do not intersect. Therefore. there is no solution. The two lines have equal
    slopes which further proves that they are parallel. Slope1=-A/B=-2/-1=2, Slope2=-8/-4=2. If you solved the two equations mathematically using the
    elimination method.the results will
    be 0=4 which is not a true statement
    and further proves that there is no
    solution.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    I am in dire need of some help I am not understanding this at all I am to solve the systems of equations by graphing 2x-y=14 2x+3y=-10 Could someone please explain this to me in dummy terms
  2. Algebra - College intro

    I'm having trouble learning "Solving systems of equations by graphing". Can you show me how to do the following problem?
  3. algebra

    solve the system of equations by graphing. Then classify the system as consistent or inconsistent and the equations as dependent or independent. x+y=14 x-y=2 What is the solution of the system of equations?
  4. College Algebra

    solve systems of equations by graphing... I get how to graph and solve equations but i just don't understand why its coming out wrong u=v 4u=3v-3
  5. graphing

    how do you solve linear systems by graphing like x-y=2 x+y=-8
  6. algebra

    Try graphing the following two equations. Eq 1 y = 2x + 3 Eq 2 y = 2x + 1 How are these two lines related?
  7. algebra

    i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y - 1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations …
  8. algebra

    Solve the system of equations by graphing. -3x-2y=18 3x-y=0
  9. Math, Algebra, Graphing Systems of Linear Equation

    I'm confused about graphing or solving the linear equations for slope/intercept. Here is what I solved: 3x+2y=-6 X-4y=-16 2y= -3x-6 -4y=1x-16 Y=-3/2+3 Y=+1/4+4 ------------- My answer for graphing the systems for the lines to intersect...well, …
  10. Math, Algebra, Graphing Systems of Linear Equation

    I'm confused about graphing or solving the linear equations for slope/intercept. Here is what I solved: 3x+2y=-6 X-4y=-16 2y= -3x-6 -4y=1x-16 Y=-3/2+3 Y=+1/4+4 ------------- My answer for graphing the systems for the lines to intersect...well, …

More Similar Questions