21-07-2011, 11:13 AM
Presented By
Sarthak Parihar
[attachment=14676]
Coordinate Geometry
Definition
Grid – A pattern of horizontal and vertical lines, usually forming squares.
Definition
Coordinate grid – a grid used to locate a point by its distances from 2 intersecting straight lines.
Definition
x axis – a horizontal number line on a coordinate grid.
Hint
x is the shortest and likes to lie down horizontally.
Definition
y axis – a vertical number line on a coordinate grid.
Hint
y is the tallest and stands upright or vertically.
Definition
Coordinates – an ordered pair of numbers that give the location of a point on a grid. (3, 4)
Hint
The first number is always the x or first letter in the alphabet. The second number is always the y the second letter in the alphabet.
How to Plot Ordered Pairs
Step 1 – Always find the x value first, moving horizontally either right (positive) or left (negative).
How to Plot Ordered Pairs
Step 2 – Starting from your new position find the y value by moving vertically either up (positive) or down (negative).
How to Find Ordered Pairs
Step 1 – Find how far over horizontally the point is by counting to the right (positive) or the left (negative).
How to Find Ordered Pairs
Step 2 – Now count how far vertically the point is by counting up (positive) or down (negative).
What is the ordered pair?
What is the ordered pair?
What is the ordered pair?
What is the ordered pair?
What is the ordered pair?
Four Quadrants of Coordinate Grid
When the number lines are extended into the negative number lines you add 3 more quadrants to the coordinate grid.
Four Quadrants of Coordinate Grid
If the x is negative you move to the left of the 0.
Four Quadrants of Coordinate Grid
If the y is negative you move down below the zero.
How to Plot in 4 Quadrants
Step 1 - Plot the x number first moving to the left when the number is negative.
How to Plot in 4 Quadrants
Step 2 - Plot the y number moving from your new position down 2 when the number is negative.
How to Plot in 4 Quadrants
When x is positive and y is negative, plot the ordered pair in this manner.
How to Plot in 4 Quadrants
When x is negative and y is positive, plot the ordered pair in this manner.
Sarthak Parihar
[attachment=14676]
Coordinate Geometry
Definition
Grid – A pattern of horizontal and vertical lines, usually forming squares.
Definition
Coordinate grid – a grid used to locate a point by its distances from 2 intersecting straight lines.
Definition
x axis – a horizontal number line on a coordinate grid.
Hint
x is the shortest and likes to lie down horizontally.
Definition
y axis – a vertical number line on a coordinate grid.
Hint
y is the tallest and stands upright or vertically.
Definition
Coordinates – an ordered pair of numbers that give the location of a point on a grid. (3, 4)
Hint
The first number is always the x or first letter in the alphabet. The second number is always the y the second letter in the alphabet.
How to Plot Ordered Pairs
Step 1 – Always find the x value first, moving horizontally either right (positive) or left (negative).
How to Plot Ordered Pairs
Step 2 – Starting from your new position find the y value by moving vertically either up (positive) or down (negative).
How to Find Ordered Pairs
Step 1 – Find how far over horizontally the point is by counting to the right (positive) or the left (negative).
How to Find Ordered Pairs
Step 2 – Now count how far vertically the point is by counting up (positive) or down (negative).
What is the ordered pair?
What is the ordered pair?
What is the ordered pair?
What is the ordered pair?
What is the ordered pair?
Four Quadrants of Coordinate Grid
When the number lines are extended into the negative number lines you add 3 more quadrants to the coordinate grid.
Four Quadrants of Coordinate Grid
If the x is negative you move to the left of the 0.
Four Quadrants of Coordinate Grid
If the y is negative you move down below the zero.
How to Plot in 4 Quadrants
Step 1 - Plot the x number first moving to the left when the number is negative.
How to Plot in 4 Quadrants
Step 2 - Plot the y number moving from your new position down 2 when the number is negative.
How to Plot in 4 Quadrants
When x is positive and y is negative, plot the ordered pair in this manner.
How to Plot in 4 Quadrants
When x is negative and y is positive, plot the ordered pair in this manner.
