Answer:
A. the total practice time before the season began is 6 hours
B. See explanation
C. See explanation
D. Additive relationship
Step-by-step explanation:
The graph in the attached figure.
A. How many hours did the soccer team practice before the season began?
As the graph represents the relationship between the hours a soccer team practiced after the season started and their total practice time for the year.
and it is required to find the practice hours before the season began
We can deduce that, as the line begin at the point (0,6) which represent the intersection with the y-axis and consequently represents the total practice time before the season began as x = 0.
So, the total practice time before the season began is 6 hours
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B. What are the two quantities in this situation?
There are two quantities, let the quantities x and y
x ⇒ The hours a soccer team practiced after the season started
y ⇒ The total practice time for the year in hours.
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C. What are the two dependent and independent variables?
The independent variable is x and the dependent is y
because The total practice time for the year in hours (y) depending on the hours a soccer team practiced after the season started (x)
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D. Is the relationship between the variables additive or multiplicative?
To find the relationship between the variables, we will find the equation between x and y
As shown the graph represents a line between x and y.
The general form of the line is ⇒ y = mx + c
where m is the slope and c is y-intercept
so, as x = 0 , y = 6 ⇒ c = 6
Choose another point to find m, say we choose (2,8)
so, as x= 2 ⇒ y = 8
Substitute at the general form with x= 2 , y = 8 and c = 6
8 = 2m + 6
Solve for m
2m = 8 - 6 = 2
m = 2/2 = 1
∴ y = x + 2
The last relation is Additive relationship
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Note:
Additive relationships ⇒ you add the same number to any x-value to get the corresponding y-value for example y = x + c
Multiplicative relationships ⇒ you multiply any x-value times the SAME number to get the corresponding y-value for example y = cx
Answer:
you should include the graph next time -.-
Step-by-step explanation:
