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    Jnnfredmond's Avatar
    Jnnfredmond Posts: 1, Reputation: 1
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    #1

    Apr 10, 2007, 03:10 PM
    What happen
    what happen to the graph of the line y=3x-2 when equation is changed to y=3x+6
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Apr 10, 2007, 05:00 PM
    The y-intercept changes from -2 to 6. Graph them both and see.
    asterisk_man's Avatar
    asterisk_man Posts: 476, Reputation: 32
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    #3

    Apr 10, 2007, 05:03 PM
    you've given two equations in slope-intercept form.
    slope-intercept form looks like y=mx+b. m is the slope of the line, b is the spot that the line will cross the y axis, also known as the "y intercept".
    your two equations differ in their y intercept. The first will intercept the y axis at y=-2, the second at y=+6. they both have the same slope. Therefore, when you change from y=3x-2 to y=3x+6 the slopes stay the same but the line moves up 8 units.

    I hope this helps. If you have questions please ask.
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