What can be said regarding a line if its slope is (i) zero (ii) posi

1.	What can be said regarding a line if its slope is (i) zero (ii) positive (iii) negative
Answer» (i) If the slope of the line is zero it means M = tan θ M = tan 0 Since, m = 0 So, The line is parallel to x - axis. (ii) If the slope of the line is positive it means Since θ is an acute So, The line makes an acute angle with the positive x - axis. (iii) If the slope of the line is positive it means Since, θ is an obtuse So, The line makes an obtuse angle with positive x - axis.

What can be said regarding a line if its slope is (i) zero (ii) positive (iii) negative

Answer»

(i) If the slope of the line is zero it means

M = tan θ

M = tan 0

Since, m = 0

So, The line is parallel to x - axis.

(ii) If the slope of the line is positive it means Since θ is an acute

So, The line makes an acute angle with the positive x - axis.

(iii) If the slope of the line is positive it means

Since, θ is an obtuse

So, The line makes an obtuse angle with positive x - axis.