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are these 2 equations parallel?

y=2x+5

-2x+y=-2

thanks, and no answers such as "x" and nothing else like on person has been doing

19 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    yes

    cuz

    y=mx+b

    mx= the slope of the line

    so..

    y= 2x+5

    slope = 2

    -2x+y = -2

    move the 2 over to the other side

    y=2x-2

    slope = 2

    YES they are PARALLEL

    FYI - parallel slopes is when 2 lines have the same slope EX: this problem

    -perpendicular lines is when 2 lines have the opposite slope EX: Line one has a slope of 5, in order to be perpendicular line 2 slope would have to be -1/5 (negative)

  • Anonymous
    1 decade ago

    Parallel equations have the same slope. So, what I would do, I would solve the second equation for y first:

    -2x+y=-2

    y=-2+2x

    So, the slope of this equation is 2, which is the same as the first one, meaning that, yes, the two equations are parallel.

    Source(s): Grade 10 math
  • Anonymous
    1 decade ago

    yes, because when u move the -2x to the right side, it becomes 2x which is exactly the same as the other slope. When two slopes are the same the lines are parallel.

  • 1 decade ago

    Rewrite the second equation in slope-intercept form

    y=2x-2, y=2x+5

    yes, they are parallel because they both have slopes of 2

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  • Anonymous
    1 decade ago

    leave y=2x + 5 alone

    for other eq... you..

    add 2x to each side so its y= 2x -2

    parallel lines = same slope

    slope of line 1 = 2x

    slope of line 2 = 2x

    parallel yes

  • 1 decade ago

    Solve both for y so they are in slope-intercept form. One is already solved for y, so you just need to adjust the other:

    -2x+y=-2

    y=2x-2

    Therefore your two equations are:

    y=2x-2

    y=2x+5

    These equations have the same slope (coefficient of x), so they are indeed parallel.

  • 1 decade ago

    y=mx+b where m is the slope

    y=2x+5 and y=2x-2 have the same number for m, the same slope, and are therefore parrallel

  • 1 decade ago

    Yupp.

    y=2x+5

    y=2x-2

    See how they both have 2x? That means that they both have the same slopes, which means that they are parallel.

  • 1 decade ago

    yes.

    set -2x + y = -2 to y =mx+ b form.

    y= 2x -2

    equal slope = parallel lines.

  • 1 decade ago

    yes! if you see that both the numbers in front of x are the same, they have equal slopes which means they are parallel

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