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26 August, 18:44

A line has a y-intercept of - 21 and a slope of 4. Find the equation of the line.

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  1. 26 August, 19:10
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    y = 4x - 21

    Step-by-step explanation:

    General equation of a line is y = mx + c

    where y and x are coordinates of the line. (x, y).

    m is the gradient / slope of the line.

    c is the y-intercept.

    By substitution

    y = 4x - 21
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