Post on 03-Jan-2016
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Plot points on the rectangular coordinate system. Plot the x coordinate first then the y coordinate. This is an ordered pair of real numbers. (x,y)
Linear Equation with two variables
• 2x+3y=12Determine if the given ordered pairs are solutions to the given equation.1.(3,2)2.(-4,6)3.(0,4)4.(-30,24)
Example Find the x and y intercepts and graph the equation after plotting a few more points.
x
y
x y
0
0
2x+y=4
For the following lines, determine the x- and y-intercepts. Be sure to indicate which one is which.1. x-y=52. y=3x+2• 1) (5,0) and (0,-5)• 2) (-2/3,0), (0,2)
1. What is the desirable heart rate of a 20 year old woman during exercise?
2. What is the desirable heart rate of a 20 year old man during exercise?
(a) (b)
(c) (d)
Graph the following equation by letting x=-2,-1,0,1,2.
11
2y x
x y
-2
-1
0
1
2
x
y
x
y
x
y
x
y
change in y 5 1 6 6
change in x 2 3 5 5m or
Find the slope of the line that passes
through (-2,5) and (3,-1)
Examples:Find the slope of the line passing through the points:1. (6,1) and (-4,-1)2. (4,-1) and (0,3)
1) m = 1/52) m = -1