Download presentation

Presentation is loading. Please wait.

1
**Rectangular Coordinate System**

2
**Definitions X-axis – the horizontal axis Y –axis – the vertical axis**

Rectangular coordinate system: where the x-axis and the y-axis intersect Ordered pair: identifies the location of a point on the rectangular coordinate system (x coordinate, y coordinate) Origin: (0,0) – intersection of the x and y axis Quadrant: a section of the rectangular coordinate system

4
**How to identify a point? First locate the origin**

Second, determine if you are going left or right from the origin If you go left, your x –coordinate is negative If you go right, your x –coordinate is positive

5
**Third, determine if you are going up or down from the origin**

If you go down, your y –coordinate is negative If you go up, your y –coordinate is positive

6
**How to graph a point? First Locate the origin**

Second, graph your x -coordinate: IF the value of your x coordinate is positive move to the right, if negative move to the left Third, graph your y -coordinate: IF the value of your y- coordinate is positive move up, if negative move down

7
**How to identify the quadrant?**

First – locate where your point is Second – check your graph on which quadrant it is in.

8
**Determine if an ordered pair is a solution**

Substitute your ordered pair into the equation: Check to see if the statement is true. Example: 3x – y = 12 Is (0, 12) a solution? 3(0) – (12) = 12 0 – 12 = 12 No, therefore (0,12) is not a solution Example: 3x – y = 12 Is (1, -9) a solution? Example: y = -2x Is (-3, 8) a solution? Example: x = 9 Is (4, 9) a solution?

9
**Find the missing coordinate**

First substitute the given coordinate into the equation. Example: X + 2y = 8 ( ____, 9) X + 2(9) = 8 Simplify and solve for the missing coordinate X + 18 = 8 X = -10

10
**Practice X – 4y = 4 (____, -2) 3x + y = 9 ( 4, ____) -2x + 7y = 14**

(3, _____) (_____, 5) Y = 9 (5, ___) (____, 9)

Similar presentations

© 2022 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google