Mathematics
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OpenStudy (anonymous):
Could some one help me?
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OpenStudy (anonymous):
Indicate in standard form the equation of the line through the given points.
P(0, -4), Q(5, 1)
OpenStudy (anonymous):
Should i sent a picture?
OpenStudy (eric_d):
sure
OpenStudy (anonymous):
OpenStudy (anonymous):
i only have until 12:00 then my school closes
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ganeshie8 (ganeshie8):
start by finding the slope of PQ
OpenStudy (eric_d):
1
OpenStudy (eric_d):
after that
ganeshie8 (ganeshie8):
Yes, slope = m = \(\large \dfrac{1--4}{5-0} = \dfrac{5}{5} = 1\)
OpenStudy (anonymous):
I really dont know
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ganeshie8 (ganeshie8):
its okay, did u get how we calculated the slope = 1 ?
OpenStudy (anonymous):
yes much better then my teacher
ganeshie8 (ganeshie8):
good, since we knw that slope = m = 1,
next we write the equation in `slope intercept` from :
\(\large y = mx + b\)
ganeshie8 (ganeshie8):
put m = 1
ganeshie8 (ganeshie8):
\(\large y = 1x + b\)
plugin one of the given points and find the value of \(\large b\)
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OpenStudy (anonymous):
ok
ganeshie8 (ganeshie8):
plugin P(0, -4) in above equation :
\(\large -4 = 1(0) + b\)
\(\large -4 = b\)
ganeshie8 (ganeshie8):
So the equation of line in `slope-intercept ` form is :
\(\large y = 1x - 4\)
ganeshie8 (ganeshie8):
know how to convert this to standard form ?
ganeshie8 (ganeshie8):
standard form :
\(\large Ax + By = C\)
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OpenStudy (anonymous):
ok
ganeshie8 (ganeshie8):
\(\large y = 1x - 4 \)
\(\large 1x - y = 4\)
\(\large x - y = 4 \)
OpenStudy (anonymous):
is that the answer?
ganeshie8 (ganeshie8):
^^thats the final equation in standard form
OpenStudy (anonymous):
ok thanks so much . Your explanation is a million times better then reading 3 paragraphs
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ganeshie8 (ganeshie8):
glad to hear that ! yw :)