algebra

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Given the linear equation y = 4x + 2, find the y-coordinates of the points (-2, ), (1, ), and (-3, ). Please show all of your work. Plot these points and graph the linear equation.

  • algebra -

    to get the y-coordinates, we just substitute the value of the x-coordinates given.
    at x = -2:
    y = 4x + 2
    y = 4(-2) + 2
    y = -8 + 2
    y = -6
    thus (-2, -6)

    at x = 1:
    y = 4x + 2
    y = 4(1) + 2
    y = 4 + 2
    y = 6
    thus (1, 6)

    at x = -3:
    y = 4x + 2
    y = 4(-3) + 2
    y = -12 + 2
    y = -10
    thus (-3, -10)

    to plot this, you locate all the points we solved above. then connect these points and extend on both ends.

    hope this helps~ :)

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