What is used to investigate the possible relationship between two variables that both relate to the same event. Can have a positive or negative or no correlation.
200
14x+16=200
x=13.14
200
Identify the y-intercept:
y=1/3x - 23
What is (0,-23)?
200
If the slope is -3, and the y intercept is 14, what is the equation of the line?
What is y= -3x+4?
200
y= 2x-5
on board
200
Graph the linear equation. y= x+3
What is (show)
300
6=2(y+2)
y=1
300
Identify the x and y intercepts:
2x+4y=9
What is x (9/2,0)
y (0, 9/4)?
300
What is the slope of the equation:
2y= 3x+8?
What is m= 3/2?
300
y= -1/2x - 5
on the board
300
Graph the linear equation:
y =10
What is a horizontal line through point (0, 10)?
400
9(p-4)=18
p=6
400
Identify the x intercept:
y=2x + 6
What is (-3,0)?
400
This is the slope of the line going through the points
(5,3) and (2,9).
What is -2?
400
y=4+3x
on board
400
Name the slope and y intercept
y= 8-2x
What is m= -2, and b=8?
500
-4/7k-9=1
k=-2/35
500
What are the x and y intercepts?
3y=12x+8
What is x-int (-2/3, 0) and y-int (0, 8/3)?
500
This is the slope of the line going through the points (2,-1) and (-7, 6).