What do you mean by the line :

(i) x = 0

(ii) x = 4

(iii) y = 0

(iv) y = 4

(v) x = -3

(vi) y = -2

(i) x = 0

This is the equation of the y-axis itself.

(ii) x = 4

This is a vertical line parallel to the y-axis, located 4 units to the right of the y-axis.

(iii) y = 0

This is the equation of the x-axis itself.

(iv) y = 4

This is a horizontal line parallel to the x-axis, located 4 units above the x-axis.

(v) x = -3

This is a vertical line parallel to the y-axis, located 3 units to the left of the y-axis.

(vi) y = -2

This is a horizontal line parallel to the x-axis, located 2 units below the x-axis.