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Math Help - Two Simultaneous linear equations

  1. #1
    Junior Member turbod15b's Avatar
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    Two Simultaneous linear equations

    solve for using x and y by plotting the curves on a single graph (x between

    y = 2x + 3
    y = 3x - 10

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  2. #2
    Member
    Joined
    Dec 2008
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    Auckland, New Zealand
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    y = 2x+3 has a gradient of 2 and a y-intercept of 3.
    y = 3x-10 has a gradient of 3 and y-intercept of -10.

    When you plot these lines they will intersect at a single point. The answer to solving this question is to find the x-coordinate of this intersection point. You could always check you're answer if you're unsure by solving the equation 2x+3 = 3x-10.
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