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8 December, 14:47

What is the y-intercept - x+5y=45

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  1. 8 December, 15:13
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    To find the y-intercept, we can convert this to slope-intercept form, or replace the value of x with 0 and solve for y.

    We'll do both first.

    -x + 5y = 45

    5y = 45

    Divide both sides by 5.

    y = 9

    Now let's convert it to slope-intercept.

    -x + 5y = 45

    Add x to both sides.

    5y = 45 + x

    Divide both sides by 5.

    y = 1/5x + 9

    y = 9

    The y-intercept of our line is 9.
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