Answer:
x(1÷4) y(-2)
Step-by-step explanation:
4x= -1-y
4x- 3y= 7
-1-y-3y=7
y= -2
4x-3 x (-2)=7
x=1÷4
A) The attachment shows the equation of the best-fit line. It is approximately
.. test average = 89.7 -2.93*(hours playing games)
b) The slope indicates the expected drop in test score for each hour spent playing games
c) The y-intercept is the expected test score if no hours are spent playing games.
d) The correlation coefficient is -0.92, a significant negative correlation. One might expect that hours spent playing games indicates a lack of interest in school subjects or studying, hence a likelihood that test scores will be lower.
e) The equation predicts a test score of about 75 for someone who spends 5 hours a week playing video games.
Answer:
Step-by-step explanation:
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