Q36 of 59 Page 178

For specifying a straight line, how many geometrical parameters should be known?

Different form of equation of straight line are

Intercept form:



where, a and b are the intercepts on the axis


In intercept form, we need two parameters ‘a’ and ‘b’ to specify a straight line


Slope – Intercept Form:


y = mx + c


where m = tan θ, and θ is the angle made with positive x – axis


and c is the intercept on y – axis.


So, we need two parameters ‘m’ and ‘c’ to specify a straight line.


Hence, the correct option is (b)

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