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9th grade algebra

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decide whether the graphs of the two equations are parallel lines.

a. y=3x+2, y=1/3x+4

b. 3y=15x+4, y=5x+1

  • 9th grade algebra - ,

    do the lines in a) have the same slope?
    do the lines in b) have the same slope?

  • 9th grade algebra - ,

    I suppose..

  • 9th grade algebra - ,

    You suppose wrong.

    Put the sets of line in y=mx + b
    and then compare the slope m. Parallel lines have the same slope.

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