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mr Goodwill [35]
3 years ago
13

Find the residual values, and use the graphing calculator tool to make a residual plot.

Mathematics
2 answers:
ratelena [41]3 years ago
8 0

<u>Answer-</u>

D. No, the points are in a curved pattern.


<u>Solution-</u>

The difference between the observed or given value of the dependent variable and the predicted value is called the residual. Each data point has one residual.

Residual\ value= Given\ value - Predicted\ value

<em>If the points in a residual plot are randomly dispersed around the horizontal or x-axis, a linear regression model is appropriate for the data. Otherwise, a non-linear model is more appropriate.</em>

Plotting a graph, by taking the residual values on ordinate and values of given x on abscissa, a non-random U pattern is obtained.

So a non-linear model will be a better fit for this data set.


Fiesta28 [93]3 years ago
5 0

Answer:

Does the residual plot show that the line of best fit is appropriate for the data?

No, the points are in a curved pattern. it is a on edg

Step-by-step explanation:

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Six hundred thousand ,+ Eighty thousand ,+ ten.
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1 A line passes through (0, 2) and has a slope of 3. Which function's graph is parallel to this line?
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2 years ago
How do you simplify this?<br>x²y+xy² / y²+2/5 × xy​​​
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\huge \boxed{\mathbb{QUESTION} \downarrow}

  • How do you simplify this?
  • x²y+xy² / y²+2/5 × xy

\large \boxed{\mathbb{ANSWER\: WITH\: EXPLANATION} \downarrow}

\sf\frac{  { x  }^{ 2  }  y+x { y  }^{ 2  }    }{  { y  }^{ 2  }  + \frac{ 2  }{ 5  }   \times  xy  } \\

Factor the expressions that are not already factored.

_____

<u>How </u><u>to</u><u> factorise</u><u> </u><u>:</u><u>-</u>

<u>NUMERATOR</u> \downarrow

\sf \: x ^ { 2 } y + x y ^ { 2 }

Factor out xy.

\sf \: xy\left(x+y\right)

<u>DENOMINATOR</u> \downarrow

\sf{ y  }^{ 2  }  + \frac{ 2  }{ 5  }   \times  xy \\

Factor out 1/5.

\sf \: {\frac{1}{5}y\left(2x+5y\right)}  \\

_____

Continuing...

\sf\frac{xy\left(x+y\right)}{\frac{1}{5}y\left(2x+5y\right)}  \\

Cancel out y in both the numerator and denominator.

\sf\frac{x\left(x+y\right)}{\frac{1}{5}\left(2x+5y\right)}  \\

Expand the expression.

\sf\frac{x^{2}+xy}{\frac{2}{5}x+y}  \\

This can further simplified to as \downarrow

=    \boxed{\boxed{\bf\frac{5x\left(x  +y\right)}{2x+5y}}}

3 0
2 years ago
Can you answer #1 and #3 please (find the slope) ASAP
daser333 [38]

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#1:

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Second point : (2, -2) = (x2, y2)

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#3:

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Second point : (5, -2) = (x2, y2)

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Solve the equation:

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The slope of the line in #3 is : 0


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2 years ago
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