Kagome_gurl8
Write in standard form, an equation of the line passing through the given point with the given slope.
slope = –8; (–2, –2)
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Kagome_gurl8
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8x + y = –18
–8x + y = –18
8x – y = –18
8x + y = 18
Australopithecus
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use
y=mx + b
where,
m = slope
b = y-intercept (the y-intercept is the point where x = 0)
Australopithecus
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Just sub the slope that is given, and the x and y value of the point and solve for b.
Remember a point in this case is defined as (x,y)
Australopithecus
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once you have solved for b just sub along with the slope into the equation
y = mx + b
remember the y value is the output and the x value is the input, so they are changing the slope and y-intercept are constants
Australopithecus
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any questions?
Kagome_gurl8
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So it would be B?
Australopithecus
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lol yes, wow they might as well have given you the answer
Kagome_gurl8
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Yay!
Australopithecus
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I hope you still go through the problem even though the answer is so evident to understand why it is correct
Kagome_gurl8
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I do and will. :)
Australopithecus
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-8(-2) + b = (-2)
b = -16 - 2
b = -18
y = (-8)x + (-18)
Australopithecus
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y + 8x = -18
Australopithecus
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so no it is not b sorry I read the answers wrong ha I'm half asleep
Kagome_gurl8
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It happens to the best of us. :)
Australopithecus
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but yeah I hope you follow what I'm saying this stuff is important
Australopithecus
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even though it may not at the moment seem interesting or relevant