Find the equation of the line joining the points $(a,0)$, $(0,b)$.

EQUATION OF

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The gradient of the line is $-\frac{b}{a}$. Therefore, using the method of EXAMPLE 1, its equation is $ay+bx=ab$

Dividing through by $ab$, the equation becomes

$\frac{x}{a}+\frac{y}{b}=1$

Which is known as the intercept from of the equation of a line.

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Asked: 1 month ago