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What is the y-intercept of the line described by the equation y=4x-9
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What is the y-intercept of the line described by the equation y=4x-9

User Johansalllarsson
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An equation in the slope-intercept form y = mx + b the variable b is the y-intercept.

Or, if you replace the variable x with 0, you will also get the y-intercept.

y = 4(0) - 9
y = -9

So, the y-intercept is -9.
User Musso
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