On the Cartesian plane, the line y = 0 is called the:
Ordinate.
Origin.
x-axis.
y-axis.
The midpoint of the line segment joining the points P(6, - 3) and Q(18, 15) is the point with coordinates:
(- 6, 6).
(12, 12).
(12 ,6).
(- 6, - 9).
The middle quartile of a cumulative frequency curve is at the:
25th percentile.
75th percentile.
100th percentile.
50th percentile.
The y-intercept of the line 3y + 4x = 12 is:
3.
7.
4.
-4.
The sum of the three interior angles of a triangle is:
90°.
270°.
360°.
180°.
