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Math Help - graphing a line

  1. #1
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    graphing a line

    Graph the line.
    2) Through (0, 6), m = 15 1 over 5
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  2. #2
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    Quote Originally Posted by Noelle View Post
    Graph the line.
    2) Through (0, 6), m = 15 1 over 5
    Whaaat? Please tell us the question as it is written.

    I get that you want a line through the point (0, 6). And that you are given the slope. But what is "15 1 over 5"?

    -Dan
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  3. #3
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    ok sorry

    Graph the line.
    2) Through (0, 6), m = 1 (rise) over 5 (run) so 1 over 5
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  4. #4
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    Quote Originally Posted by Noelle View Post
    Graph the line.
    2) Through (0, 6), m = 1 (rise) over 5 (run) so 1 over 5
    Hello,

    I assume that the slope of the line is m=\frac15

    Use the point-slope-formula. If you know the coordinates of point P(x_1, y_1) and the slope m then the equation of the line is:

    y-y_1=m(x-x_1) . Plug in the values you already know and solve for y. (y = \frac15 \cdot x+6)


    Second attempt: The general form of an equation of a straight line is:

    y=mx+b . The coordinates of the given point must satisfy this equation. You know m already. Plug in these values and solve for b:

    6=\frac15 \cdot 0 +b~\iff~b = 6
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