Plot+points+with+given+coordinates

=Simple steps in plotting points=

= = If coordinates are x,y then you can figure it out like mentioned in steps 1 and 2. If coordinates are given, then you may go on directly to step 5 ! (The last step)

1) Substitute values for the variables (make sure your substituted values make sense for the equation) For example, if the equation is x+y=5, you can’t substitute x for 5 and y for 2 because 5+2 does not equal 5, and the equation will therefore be wrong.

2) List at least three equations with the substituted values. For example: Equation: x+y=5 2+3=5 1+4=5 0+5=5 …… 3) Using this information, create a table of values. For example: 4) Name the sets of ordered pairs : (x,y) For example: (2,3) (1,4) (0,5) (-1,6) (-2,7)
 * Value of x || Value of y ||
 * 2 || 3 ||
 * 1 || 4 ||
 * 0 || 5 ||
 * -1 || 6 ||
 * -2 || 7 ||

5) And finally, plot the ordered pairs onto the graph. (And also make sure to remember the acronym “AT POINT” when doing the graph! ) For example: Your point on the graph would be the green point [with coordinates that say (2,3)] like in the Cartesian plane below. Your point on the graph would look like the red point [with coordinates that say (-3,1)] in the Cartesian plane below.
 * If you are given the coordinates (2,3), the x coordinate is 2 and the y coordinate is 3
 * If you are given the coordinates (-3,1), then the x coordinate is -3 and the y coordinate is 2

==

Now, some of you may be confused about why the coordinates are placed like so. For example, why (-3,1) is placed where it is. Below is a brief overview to explain.

To sum it up, these are the x and y coordinates in the example given and after it has been plotted, it looks like this: [[image:cartesian-plane-7-point.jpg width="353" height="354"]]
** A few questions for practice: **


 * 1.** Using the given pairs plot the points
 * a)** (3,1)
 * b)** (-5,1)
 * c)** (2,3)
 * d)** (-6,-4)
 * e)** (6,-3)
 * f)** (-1,-4)


 * 2.** Graph the equation y = -x+1 for the domain { -2, -1, 0, 1, 2 }