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16 February, 22:54

Find the equation of the line through (2,3) and rising 4 units for every unit increase in x-axis

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  1. 17 February, 01:38
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    Slope is 4 (rising 4 units for every unit increase in x-axis, by definition)

    y = ax + b

    y = 4x + b,

    substitiute x=2, y=3 to find b

    3=4*2+b

    3=8+b

    b=-5

    So,

    y = 4x - 5
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