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Mathematics 25 Online
OpenStudy (anonymous):

Could some one help me?

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

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

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 \(\large b\)

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 : \(\large Ax + By = C\)

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

ganeshie8 (ganeshie8):

glad to hear that ! yw :)

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