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2015-02-12T10:55:50+08:00

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X/a + y/b =1
x/3 + y/-7 = 1
(x/3 + y/-7 = 1)(21)
7x - 3y = 21
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2015-02-13T19:14:52+08:00

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The intercept form to find the equation of the line is:
\frac{x}{a}+\frac{y}{b}=1
\frac{x}{3}+\frac{y}{-7}=1
Multiply both sides by the LCD of a and b which is 21
7x-3y=21
The equation is 7x-3y=21. Hope this helps =)
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