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Home  >>  CBSE XI  >>  Math  >>  Straight Lines
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Choose the correct answer from the given four options. Slope of a line which cuts off intercepts of equal lengths on the axes is

$\begin {array} {1 1} (A)\;-1 & \quad (B)\;-0 \\ (C)\;2 & \quad (D)\;\sqrt 3 \end {array}$

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  • Equation of a line in the intercept form is $ \large\frac{x}{a}$$+\large\frac{y}{b}$$=1$.
Step 1 :
It is given that the line makes equal intercepts on the coordinate axes.
Hence $a=b$
$ \therefore \large\frac{x}{a}$$+\large\frac{y}{a}$$=1$
$ \Rightarrow x+y=a$
Slope of the above line is -1
Hence A is the correct option.
answered Jul 3, 2014 by thanvigandhi_1

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