Wetzel

Math 101

3.1 – The Rectangular Coordinate System

The Rectangular Coordinate Plane –

·        x-axis and y-axis

·        origin

·        quadrants

·        ordered pairs

Ex.:

1.)  Plot the points (5, 3),  (-2, 4), (3, -1), and (0, 4).

2.)  Find the coordinates for points A, B, and C.    (GRAPH ON BOARD)

Linear Equations with Two Variables –

·        Standard Form –

                  ax + by = c

·        Infinitely Many Solutions

Ex. :

Determine if the given point is a solution to the equation.

3.)  (3, -3),  4x – 3y = 21                                                                 4.)  (5, -2),  -x + 7y = -9

Graph the following.

5.)  2x + 3y = 6                                                                                6.)  y = -2x + 1