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| 16 Jan 2015 12:29 AM |
so if the equation is y - 3 = 3(x + 3) and i have to graph it what is the point?? i forget the name of the form but it is something like 'slope thing'
pls help ! |
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rockybow
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| Joined: 15 Jan 2008 |
| Total Posts: 10036 |
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| 16 Jan 2015 12:29 AM |
| I graduated high school but I forget every math thing ever. |
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| 16 Jan 2015 12:30 AM |
| Only ask here if Google doesn't work. |
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| 16 Jan 2015 12:30 AM |
| I beleive slope is in the form of mx+y... |
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| 16 Jan 2015 12:30 AM |
Slope intercept form. Something this problem isnt. Too tired, OP. |
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| 16 Jan 2015 12:32 AM |
y - 3 = 3(x + 3) y - 3 = 3x + 9 +3 +3 y = 3x + 12
slinging metaphor faster than yahtzee |
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| 16 Jan 2015 12:33 AM |
y = 3x + 12 3 is yer slope 12 is yer y intercept
slinging metaphor faster than yahtzee |
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| 16 Jan 2015 12:34 AM |
| i was gonna learn it but my brain is so tired to even think |
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| 16 Jan 2015 12:35 AM |
It's the point-slope form.
y - y1 = m(x - x1),
where (x1, y1) is the point and the m is the slope.
Your form is y - 3 = 3(x - (-3)), So your point is (-3, 3) and your slope is 3. |
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| 16 Jan 2015 12:38 AM |
i know the answer. still need help? heres the damn answer
y = (3x + 3) + 3 = 3x + 6
y = 3x + 6 Slope intercept form. Y-intercept is (0, 6) and slope is 3.
To rewrite this equation in standard form (ax + by = c), subtract y from each side, and subtract 6 from each side, we'd get: 3x - y = -6.
x-intercept, we let y = 0, so 3x = -6, so x = -2
x-intercept = (-2, 0)
The line perpendicular to this line will have the opposite reciprocal slope. The original equation has a slope of 3 as defined earlier, therefore the _|_ line has a slope of -1/3.
Using point slope formy-y_(1)=m(x -x_(1)) with slope of -1/3 and containing point (5,1) we have the equation:
y - 1 = -1/3 (x - 5)
Now place in standard form by multiplying both sides by -3 to get:
-3(y - 1) = x - 5 Distribute -3 to get:
-3y + 3 = x - 5 Rearrange to ax + by = c, to get:
x + 3y = 8
NEED HELP NO LONGER. |
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| 16 Jan 2015 12:38 AM |
| u have all failed ur math. or atleast forgot it. I STILL REMEMBER IT .3. |
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| 16 Jan 2015 12:49 AM |
| ur all wrong i just did the entire math |
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Odd
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| Joined: 14 May 2007 |
| Total Posts: 2498 |
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| 16 Jan 2015 12:54 AM |
| I am on my last year of High school. |
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