math

Graph using the intercept method: 2x + y = 4.
i just cant get it

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  1. First solve for y
    y = -2x + 4
    which is like
    y = m x + b
    Now, when x = 0, y = 4 in other words (0,4)
    that is the meaning of intercept, b, in y = m x + b,---- where the line hits the y axis which is where x = 0
    so you make that pencil mark at (0,4)
    Now the slope, m is -2
    So from your point at (0,4) go right one and down m or -2 which is y=4-2 = 2
    and mark that point (1, 2)
    Two points determine a straight line. Draw your line through those two points for all real x and all real y

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  2. 2x+y=4
    -2x -2x
    -----------
    y=-2x+4

    k now when u graph u go up 4 than from that point u go up and over to the left once

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  3. britnee

    the slope , m, is -2
    go left one and up 2
    or right one and down 2

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