Mathematics
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ganeshie8 (ganeshie8):
.
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ganeshie8 (ganeshie8):
@shandapanda
ganeshie8 (ganeshie8):
Point : (-1, 5)
Slope : m = -1
ganeshie8 (ganeshie8):
remember point slope form of line :-
If,
Point : \((x_1, y_1)\)
Slope : \(m\)
then,
equation of Line : \(y-y_1 = m(x - x_1)\)
ganeshie8 (ganeshie8):
Point : \((-1, 5)\)
Slope : \(-1\)
equation of Line : \(y-y_1 = m(x - x_1)\)
\(y-5 = -1(x - - 1)\)
\(y-5 = -1(x + 1)\)
\(y-5 = -x - 1\)
\(y = -x + 4\)
ganeshie8 (ganeshie8):
see if that makes some sense
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OpenStudy (anonymous):
not at all!!!!!!!
ganeshie8 (ganeshie8):
its okay, hang on. lets do next problem
OpenStudy (anonymous):
Find the equation of a line given the point and slope below. Arrange your answer in the form y = mx + b, where b is the constant.
(-1, 0)
m = -2
ganeshie8 (ganeshie8):
equation of line : \(y - y_1 = m(x - x_1)\)
ganeshie8 (ganeshie8):
(-1, 0)
x1 y1
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ganeshie8 (ganeshie8):
plug these in above equation, and tell me wat u get
OpenStudy (anonymous):
y-0=m(x+1)
ganeshie8 (ganeshie8):
Awesome :)
plug the given \(m\) value also
OpenStudy (anonymous):
y-0=-2(x+1)
ganeshie8 (ganeshie8):
looks perfect,
we're done mostly.
just change it and make it look like the asked form : y = mx + b
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OpenStudy (anonymous):
its 2:01 in the morning i can hardly lift my hands...
ganeshie8 (ganeshie8):
y-0 = -2(x+1)
y = -2x - 2
DONE.
ganeshie8 (ganeshie8):
you should sleep girl
OpenStudy (anonymous):
yeai havent dont math work because i was stuck on this for WEEKS and my internet wasnt working!
OpenStudy (anonymous):
Find the equation of a line given the point and slope below. Arrange your answer in the form y = mx + b, where b is the constant.
(5, 5)
m = -3
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ganeshie8 (ganeshie8):
ohkie
OpenStudy (anonymous):
y-5=-3(x-5)
ganeshie8 (ganeshie8):
Yes !
distribute -3 right side
ganeshie8 (ganeshie8):
y-5=-3(x-5)
y-5 = -3x + 15
ganeshie8 (ganeshie8):
next, add 5 to both sides
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ganeshie8 (ganeshie8):
y = -3x + 20
OpenStudy (anonymous):
Find the equation of a line given the point and slope below. Arrange your answer in the form y = mx + b, where b is the constant.
(2, 1)
m = 0
OpenStudy (anonymous):
y-1=0(x-2)
ganeshie8 (ganeshie8):
Yes !
next what
OpenStudy (anonymous):
y-1=-0?
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ganeshie8 (ganeshie8):
Yes !
y-1 = 0
y = 1
OpenStudy (anonymous):
Find the equation of a line given the point and slope below. Arrange your answer in the form y = mx + b, where b is the constant.
(7, 1)
m = 10
OpenStudy (anonymous):
ok sooooo.....
y-1=10(x-7)
ganeshie8 (ganeshie8):
Correct
OpenStudy (anonymous):
y-1=10x-70
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ganeshie8 (ganeshie8):
Correct ! add 1 both sides, so that it looks like y = mx + b
OpenStudy (anonymous):
y=10x+71?
OpenStudy (anonymous):
or y=11x+70?
ganeshie8 (ganeshie8):
noo
its -70 on right side
ganeshie8 (ganeshie8):
you cant add coconuts and oranges ok
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ganeshie8 (ganeshie8):
y-1=10x-70
+1 +1
y = 10x - 69
OpenStudy (anonymous):
ohhhhh
ganeshie8 (ganeshie8):
Cuz, -70 + 1 = -69
ganeshie8 (ganeshie8):
:)
OpenStudy (anonymous):
Find the equation of a line given the point and slope below.
(6, 6)
no slope
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OpenStudy (anonymous):
?!
ganeshie8 (ganeshie8):
No slope means, its a vertical line :-
x = k
ganeshie8 (ganeshie8):
x = 6
OpenStudy (anonymous):
Find the equation of a line given the point and slope below. Arrange your answer in the form y = mx + b, where b is the constant.
(10, 11)
m = -9
OpenStudy (anonymous):
y-11=-9(x-11)
y-11=-9x-99
y=-9x-88
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ganeshie8 (ganeshie8):
slight mistake
ganeshie8 (ganeshie8):
y-11=-9(x-\(\color{red}{10}\))
y-11=-9x\(\color{red}{+90}\)
y=-9x + 101