Question

Q4.The Slope of a line whose inclination is 90 degree is

(A) 1 (B) 0 (C) -1 (D) Not defined​

Answer 1

(D) not defined

Step-by-step explanation:

We know that if θ is the inclination of a straight line, then

tanθ is called the slope (or gradient) of a line. The slope of a line is usually denoted by m.

Here, it is given that

θ=90°

, therefore, the slope of the line is:

m=tan90°

= Not defined

Hence, the slope of the line is not defined.