drumpunk892
Find the x- and y-intercepts of the graph of the equation.
2x − y − 9 = 0
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hal_stirrup
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hi
drumpunk892
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hello
hal_stirrup
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what is y-intercepts?? and x-intercepts. what do they mean??
fortunefish
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X intercept is where the line crosses the x (horizontal) axis of the graph. Y intercept is where the line crosses the y (vertical) axis of the graph.|dw:1346113982411:dw|
drumpunk892
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yes
hal_stirrup
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good. so Y intercept algebraically is when x=0.
lets try it. >>>>> 2x − y − 9 = 0 before that lets have the eq in in y=mx+b
y=2x-9
when x=0
y=(0)x -9
y=-9 >>>>>>Y intercept=-9
hal_stirrup
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Y intercept=-9 so we have (0,-9)
hal_stirrup
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X intercept algebraically is when y=0.
0=2x-9
9=2x
9/2=x >>>>>>X intercept=9/2
drumpunk892
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hell yeah, thank you
hal_stirrup
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rate my respond if you like!
hal_stirrup
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thanks