The residual plot for a data set is shown. Based on the residual plot, which statement best explains whether the regression line
is a good model for the data set and why?
A.)The regression line is not a good model because there is no pattern in the residuals.
B.)The regression line is not a good model because only one point in the residual plot is on the x-axis.
C.)The regression line is a good model because the points in the residual plot are close to the x-axis and randomly spread around the x-axis.
D.)The regression line is a good model because the residuals approach 0 as x increases.
A.)The regression line is not a good model because there is no pattern in the residuals.
B.)The regression line is not a good model because only one point in the residual plot is on the x-axis.
C.)The regression line is a good model because the points in the residual plot are close to the x-axis and randomly spread around the x-axis.
D.)The regression line is a good model because the residuals approach 0 as x increases.
1 answer:
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Function is decreasing on (-8,infinity)
Step-by-step explanation:
The given function is
The first derivative is given by
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Divide both sides by -2. Since, we are dividing by a negative number hence, the inequality sign will change.
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First option is correct.