Straight Lines - Online Test

Q1.

The line which is parallel to X axis and crosses the curve y =  at an angle of  is:


Answer : Option B
Explaination / Solution:

The equation of the line which is a tangent to the curve y =  is 

y = mx + a/m

Since it makes and angle of 450, m = 1 

y2 = x implies a = 1/4

Hence the equation of the tangent is y = x+

That is the y intercept is  = 1/2

Hence the equation of the line is y = 1/2