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Mathematics 17 Online
OpenStudy (anonymous):

Which is the equation of the line? A. x - 2y = 6 B. -2x + y = 6 C. -3x + 6y = 6 D. 6x - 3y = 6

OpenStudy (anonymous):

ganeshie8 (ganeshie8):

use intercepts form of line : \(\large \frac{x}{a} + \frac{y}{b} = 1\)

ganeshie8 (ganeshie8):

a = xintercept b = yintercept

ganeshie8 (ganeshie8):

look at the graph, the line is cutting x-axis at "-3" right ?

OpenStudy (anonymous):

Right

ganeshie8 (ganeshie8):

so, x-intercept = \(a = -3\)

ganeshie8 (ganeshie8):

how about y-intercept ?

OpenStudy (anonymous):

Thanks so much!!!!

OpenStudy (anonymous):

6

ganeshie8 (ganeshie8):

Yes ! plug them in the equation

ganeshie8 (ganeshie8):

\(\large \frac{x}{-3} + \frac{y}{6} = 1\)

ganeshie8 (ganeshie8):

and simplify

OpenStudy (anonymous):

-3x + 6y = 6

ganeshie8 (ganeshie8):

\(\large \frac{x}{-3} + \frac{y}{6} = 1\) multiply thru out by \(6\) \(-2x + y = 6\)

ganeshie8 (ganeshie8):

you should get that^^

OpenStudy (anonymous):

Okay thanks soooooo much!

ganeshie8 (ganeshie8):

np :)

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