Solve for X
Relationships
Describing Associations
Identifying Slope & y-intercept
Solve for Y
100
3x =8
What is 2.66
100
What is the relationship (association) between distance traveled and gallons of gas used?
positive association
100
Describe this association.
Strong, Positive
100
y= 3X + 4
What is the slope?
What is the y-intercept?
Slope: 3
y-intercept: 4
100
4y + 3x = 19
y=-3/4x+19/4
200
5x =7
What is 1.4?
200
What is the relationship (association) between hours spent watching TV and math test grade?
negative association
200
Describe this association
Weak, Negative
200
y=6x+12
What is the slope?
What is the y-intercept?
Slope: 6
y-intercept: 12
200
6x + 3y =12
y=-2x+4
300
2x + 8y =12, when y=0
What is 6?
300
What is the association between a child's weight and math grade?
no association
300
Describe the association:
No association, with an outlier
300
y=12 + 6x
What is the slope?
What is the y-intercept?
slope: 6
y-intercept: 12
300
6x + 3y =14
What is y=-2x+14/3(4.667)
400
11x + 3y =17, when y=1
What is 1.2727?
400
What is missing from the following scatterplot?
A title, labels on the axes, units
400
Describe the association
Weak Positive/ or No Correlation
400
y=-6 + 7x
What is the slope?
What is the y-intercept?
Slope: 7
y-intercept: -6
400
13 x + 9 y = 12
What is y=-13/9x+12/9?
(y=-1.44x+1.33)
500
6x + 4y =21, when y=3
What is 1.5?
500
Would this be a positive association or a negative association? (Hint: Imagine how it would look in a scatter plot.)
positive association
500
Describe the association
Strong, Positive
500
16-2.5x = y
What is the slope?
What is the y-intercept?
slope: -2.5
y-intercept: 16
500
2x + 8 y = 144
What is y=-1/4x+18