Rectangular Coordinate
System
Objectives:
• Summarize concepts related to rectangular coordinate system;
• State the useful of Cartesian plain in real-life situations; and
• Create a simple representation that shows the use of the concept of the rectangular coordinate system (i.g., shapes, map reading, etc.)
REVIEW!!!
a. The point with coordinates (-5 , 3) can be graphed on the ___________________.
b. The coordinates of the origin is __________________.
c. The vertical axis of the Cartesian plane is called the ___.
d. The pair of numbers (2 , 4) is called a/an _____________ pair.
e. In the ordered pair (7 , -8), the -8 is called the ________.
Complete each sentence with the correct word or phrase.
REVIEW!!!
f. The x-coordinate is also called the ____________.
g. The intersection of the coordinate axes is called the ____________.
h. To plot the point with the coordinates (4 , -6), start at the _____________ and move 4 units to the _______________ and then move 6 units _______________.
i. To plot the point with coordinates (- ½ , 3), start at the _______________ and move ½ units to the ______________ and then move 3 units ____________.
REVIEW!!!
a. The point with coordinates (-5 , 3) can be graphed on the Cartesian plane/ x-y plane.
b. The coordinates of the origin is (0 , 0).
c. The vertical axis of the Cartesian plane is called the y-axis/ordinate.
d. The pair of numbers (2 , 4) is called a/an ordered pair.
e. In the ordered pair (7 , -8), the -8 is called the y-axis/ordinate.
Complete each sentence with the correct word or phrase.
REVIEW!!!
f. The x-coordinate is also called the abscissa.
g. The intersection of the coordinate axes is called the origin.
h. To plot the point with the coordinates (4 , -6), start at the origin and move 4 units to the right and then move 6 units downward.
i. To plot the point with coordinates (- ½ , 3), start at the origin and move ½ units to the left and then move 3 units upward.
To determine the quadrant for a given ordered pair, consider the signs of the coordinates:
( + , + ) means the point is in the first quadrant
( - , + ) means the point is in the second quadrant
( - , - ) means the point is in the third quadrant
( + , - ) means the point is in the fourth quadrant
Identifying Quadrants
Example:
a. ( 7 , -3 )
b. ( 5 , 5 )
c. ( -3 , -8 )
d. ( -10 , 4 )
e. ( 42 , 0 )
In which quadrant is each point located?
Assignment:
a. When is an equation called a linear equation in two variables? Give an examples.
b. Discuss how you will determine whether an ordered pair is a solution of a linear equation in two variables. Give examples.
Thank You!!!
That in all things, God may be Glorified!!!
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