Let a horizontal line L is at a distance ' a ' from the X-axis. I. If line L is above the X-axis, then its equation is y=-a. II. If line L is below the X-axis, then its equation is y=a.

Question

Let a horizontal line L is at a distance ' a ' from the X-axis. I. If line L is above the X-axis, then its equation is y=-a. II. If line L is below the X-axis, then its equation is y=a. (A) Both I and II are true (B) Only I is true (C) Only II is true (D) Both I and II are false

Tardigrade Admin · Accepted Answer

If a horizontal line is at a distance a from the X-axis, then equation of the horizontal line above or below the X-axes is y=a or y=-a, respectively.

Q. Let a horizontal line $L$ is at a distance ' $a$ ' from the $X$ -axis.
I. If line $L$ is above the $X$ -axis, then its equation is $y = - a$ .
II. If line $L$ is below the $X$ -axis, then its equation is $y = a$ .

Both I and II are true

Only I is true

Only II is true

Both I and II are false

If a horizontal line is at a distance a from the $X$ -axis, then equation of the horizontal line above or below the $X$ -axes is $y = a$ or $y = - a$ , respectively.

Q. Let a horizontal line L is at a distance ' a ' from the X-axis. I. If line L is above the X-axis, then its equation is y=−a. II. If line L is below the X-axis, then its equation is y=a.