If the perpendicular distance of a point P from the x-axis is 7 units and the foot of the perpendicular lies on the negative direction of x-axis, then the point P has:
A. y-coordinate = 7 or –7 only
B. y-coordinate = 7 only
C. y-coordinate = –7 only
D. x-coordinate = –7
Answer:A
If the perpendicular distance of a point P from the x-axis is 7 units and the foot of the perpendicular lies on the negative direction of x-axis, then the point P has:
A. y-coordinate = 7 or –7 only B. y-coordinate = 7 only C. y-coordinate = –7 only D. x-coordinate = –7