If [tex]$S$[/tex] is a point on the line defined by [tex]$\bar{y} = x$[/tex], the coordinates of [tex]$S$[/tex] are:

A. [tex]$(6, -6)$[/tex]
B. [tex]$(6, 0)$[/tex]
C. [tex]$(-6, 2)$[/tex]
D. [tex]$(-6, -6)$[/tex]



Answer :

To determine which point lies on the line described by the equation [tex]\( y = x \)[/tex], we need to ensure that the coordinates of the point satisfy this equation. Let's go through each option step by step:

1. Option A: (6, -6)
- Here, the x-coordinate is 6 and the y-coordinate is -6.
- Substituting these into the equation [tex]\( y = x \)[/tex], we get:
[tex]\[ -6 \neq 6 \][/tex]
- Therefore, this point does not lie on the line.

2. Option B: (6, 0)
- Here, the x-coordinate is 6 and the y-coordinate is 0.
- Substituting these into the equation [tex]\( y = x \)[/tex], we get:
[tex]\[ 0 \neq 6 \][/tex]
- Therefore, this point does not lie on the line.

3. Option C: (-6, 2)
- Here, the x-coordinate is -6 and the y-coordinate is 2.
- Substituting these into the equation [tex]\( y = x \)[/tex], we get:
[tex]\[ 2 \neq -6 \][/tex]
- Therefore, this point does not lie on the line.

4. Option D: (-6, -6)
- Here, the x-coordinate is -6 and the y-coordinate is -6.
- Substituting these into the equation [tex]\( y = x \)[/tex], we get:
[tex]\[ -6 = -6 \][/tex]
- This satisfies the equation [tex]\( y = x \)[/tex].

Since only the coordinates [tex]\( (-6, -6) \)[/tex] satisfy the line equation [tex]\( y = x \)[/tex], we conclude that the correct answer is:

Option D: (-6, -6)