X & Y Tables
Graphing
Find the Slope
Describe the Slope
Proportional Relationships
100
Create an X and Y table for the equation y=3x.
x: 0 1 2 3 .... y: 0 3 6 9 ....
100
Graph the equation y = 4x.
Points: (0,0), (1,4), (2,8), (3,12), ...
100
Find the slope of the line on the coordinate plane: https://drive.google.com/file/d/0B00Nkjh-dsSeTkZBaDBVTk83RUE/edit?usp=sharing
Slope = 1/1 = 1
100
Describe the slope of a line that goes through the points (0,0) and (1,4) (Positive, Negative, Zero, or Undefined)
Positive
100
The amount of y (in dollars) that you raise by selling x fundraiser tickets is represented by the equation y=5x. Graph the equation and interpret the slope.
Points: (0,0), (1,5), (2,10), (3,15), ... Slope: 5/1 -> $5/1 ticket = You make $5 per ticket.
200
Create an X and Y table for the equation y=2x + 2
x: 0 1 2 3 ... y: 2 4 6 8 ...
200
Graph the equation y=3x+2.
Points: (0,2), (1,5), (2,8), (3,11), ...
200
Find the slope of the line: https://drive.google.com/file/d/0B00Nkjh-dsSeTjhPTmp1UWZwQ2s/edit?usp=sharing
Slope = undefined
200
Describe the slope of the line that goes through the points (0,3) and (5,-2). (Positive, Negative, Zero, or Undefined)
Negative
200
How do you know if an equation is proportional based on the graph?
The graph goes through the origin.
300
Create an X and Y table for the equation y=0.5x + 1
x: 0 1 2 3 ... y: 1 1.5 2 2.5 ...
300
Graph the equation y=-2x + 11
Points: (0,11), (1,9), (2,7), (3,5), ...
300
Find the slope of the line: https://drive.google.com/file/d/0B00Nkjh-dsSeeDJRWkFuUzlNWXc/edit?usp=sharing
Slope = -2/1 = -2
300
Describe the slope of the line that goes through the points (2,4) and (-2,4) (Positive, Negative, Zero, or Undefined)
Zero
300
Is the relationship in the table proportional? https://drive.google.com/file/d/0B00Nkjh-dsSeMjBBLU1odTNrcmc/edit?usp=sharing
Yes, the equation would be y=2x, and if graphed, it goes through the origin.
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