Graphing Ordered Pairs
Graph the point (4, 2) on a coordinate plane.
From the origin, go 4 to the right, and 2 up.
This is the ordered pair for the point on the board.
What is ( , )?
3x + y = 1
y = -3x + 1
Evaluate (a - b)/(c - d) when
a = 7, b = 6, c = 9, and d = 5
1/4
This is called the "Origin"
What is the center of a coordinate plane, and the coordinate point (0, 0) called?
Graph the point (-2, 1) on a coordinate plane.
From the origin, go 2 to the left, and 1 up.
This is the ordered pair for the point on the board.
What is ( , )?
2y - 4x = 10
y = 2x + 5
Evaluate (a - b)/(c - d) when
a = -3, b = 0, c = 3, and d = 1
-3/2
This is what a "y-intercept" is.
What is the point at which a line crosses the y-axis?
Graph the point (6, 0) on a coordinate plane.
From the origin, go 6 to the right.
This point is found by starting at the origin, and moving 3 units to the right and 1 unit up.
What is (3, 1)?
-5x + 2y = 12
y = (5/2)x + 6
Evaluate (a - b)/(c - d) when
a = 5, b = 5, c = 5, and d = 3
0/2 = 0
This is what "Linear" means.
What is a function that makes a straight line?
Graph the point (-5, -3) on a coordinate plane.
From the origin, go 5 to the left, and 3 down.
This point is found by starting at the origin and moving 4 units to the left and 5 units down.
What is (-4, -5)
8 - y = 2x
y = -2x + 8
Evaluate (a - b)/(c - d) when
a = -6, b = 3, c = 8, and d = 2
-9/6 = -3/2
This is known as the "Domain" of a function.
What is the set of all possible x-values of a function?
Graph the point (0, -3) on a coordinate plane.
From the origin, go 3 down.
These are the ordered pairs for the three points on the board.
What are ( , ), ( , ), and ( , )?
3 - (1/2)y = 5x
y = -10x + 6
Evaluate (a - b)/(c - d) when
a = 3, b = 5, c = -2, and d = -6
-2/4 = -1/2
This is how many x-intercepts a straight line can have.
What is either exactly one, or infinitely many?