Terms & Basics
What is the vertical line on a Cartesian plane?
Y-axis
in which quadrant do both (x, y) have positive signs?
Quadrant 1
What are the coordinates of the origin?
(0,0)
What is the mirror image of (3,4) across the x-axis?
(3,-4)
if you join (2,2), (-2.2), (-2,-2), and (2,-2), what shape is formed?
Square
What is another name for the x-coordinate?
Abscissa
A point with coordinates (-,+) lies in which quadrant?
Quadrant 2
A point lies on the x-axis at a distance of 5 units left of the origin. Its coordinates are?
(-5,0)
What is the mirror image of (-5,2) across the y-axis?
(5.2)
What is the distance of the point (3, 4) from the x-axis?
4 units
What is the point of intersection of the x and y axes called?
Origin
If a point is (0,-4), on which axis does it lie?
Negative y-axis
What is the ordinate of the point (7,-3)?
-3
A point (a, b) is reflected across the x-axis. Which coordinate changes sign?
y coordinate
Find the coordinates of vertex C for a square with vertices A(5, 3), B (-2, 3), and D (5,-4).
(-2,-4)