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10 August, 04:43

If a line crosses the y-axis at (0, - 4) and has a slope of - 2, what is the equation of the line? 2x - y = - 4 2x + y = - 4 2x + y = 4 2x - y = 4

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  1. 10 August, 04:50
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    You can set up the equation y=-2x+b knowing that - 2 is the slope; from there, plug in 0 and - 4 into x and y to find b, which ends up being - 4. Therefore, you get the equation y=-2x-4, which can be arranged to be 2x+y=-4, or option #2.
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