Upload
tallulah-cote
View
29
Download
2
Tags:
Embed Size (px)
DESCRIPTION
Answers 11x – 8 -21 + 3x or 3x – 21 14n + 36 b = 11 r = -9. Bell Work Simplify each expression 6x + (5x – 8) – 9 – (12 – 3x) 4(6n + 9) – 10n Solve the 2-step equation 8 + 2b = 30 -10 – 2r = 8. The Coordinate Plane. - PowerPoint PPT Presentation
Citation preview
Bell WorkSimplify each expression6x + (5x – 8)– 9 – (12 – 3x)4(6n + 9) – 10n
Solve the 2-step equation8 + 2b = 30-10 – 2r = 8
Answers11x – 8
-21 + 3xor 3x – 21
14n + 36
b = 11
r = -9
The Coordinate Plane
The x-axis and y-axis separate the coordinate plane into four regions,
called quadrants.
II
(-, +)I
(+, +)
IV
(+, -)
III
(-, -)
The Coordinate Plane
-
-
Quadrant IQuadrant II
Quadrant III Quadrant IV
The quadrants are numbered counter- clockwise using roman numerals
Ordered pairs are used to locate points in a coordinate plane.
x-axis (horizontal axis)
origin (0,0)
y-axis (vertical axis)5
5
-5
-5
An Ordered Pair
(5,10)X-
coordinateY-
coordinate
Y-axis
X-axis
Direction of Movement for the X-Coordinate
If the x-coordinate is positive move this way
If the x-coordinate is negative move this way
Y-axis
X-axis
Direction of movement for the Y-coordinate
If the y-coordinate is positive move this way
If the y-coordinate is negative move this way
Y-axis
X-axis
Name the given point.
(1,3)
(-5,-1)
(-2,1)
(4,0)
•Always start at the origin to plot a point.
Y-axis
X-axis
(4,4)
(-3,-1)
First move out on the
X-axis
Next move on the Y-
axis
How To Plot a Point on the Coordinate Plane
In an ordered pair, the first number is the x-coordinate. The second number is the y-coordinate. Graph. (-2, 2)
When you have a negative number, you go left when it’s the x coordinate and down when it’s the y coordinate. When you have a positive number you go right when it’s the x coordinate and up when it’s the y coordinate.
two units to the left and up two units
Name the quadrant in which each point is located(-2, -7)
1. I2. II3. III4. IV5. None – x-axis6. None – y-axis
Name the quadrant in which each point is located(0, 3)
1. I2. II3. III4. IV5. None – x-axis6. None – y-axis
Name the quadrant in which each point is located(-5, 4)
1. I2. II3. III4. IV5. None – x-axis6. None – y-axis
What is the ordered pair for A?
1. (3, 1)2. (1, 3)3. (-3, 1)4. (3, -1)
5
5
-5
-5
• A
What is the ordered pair for B?
1. (3, 2)2. (-2, 3)3. (-3, -2)4. (3, -2)
5
5
-5
-5
• B
What is the ordered pair for C?
1. (0, -4)2. (-4, 0)3. (0, 4)4. (4, 0)
5
5
-5
-5
• C
What is the ordered pair for D?
1. (-1, -6)2. (-6, -1)3. (-6, 1)4. (6, -1)
5
5
-5
-5
• D
Write the ordered pairs that name points A, B, C, and D.
A = (1, 3)B = (3, -2)C = (0, -4)D = (-6, -1)
5
5
-5
-5
• A
• B• C
• D
Practice:Worksheet