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Makovka662 [10]
3 years ago
11

RULE OF FOUR: Multiple Representations of Math

Mathematics
1 answer:
nevsk [136]3 years ago
4 0

Answer:

Graph ⇒ see the attached figure

Create a table ⇒ see the attached figure

Expression/Equation ⇒ y = 8x

What is the slope? ⇒ 8

What is the y-intercept? ⇒ zero

Step-by-step explanation:

Given: Meat costs $8.00 per pound at a store.

Let the number of pounds = x, and the total cost = y

So, the equation which represents the given situation is ⇒ y = mx

Where m is the slope.

If x = 1 pound , the meat costs = y = $8

So, y = 8x

The table can created by let values for x and find the values of y.

The attached table represents the table and the graph of y = 8x

The slope = 8

y-intercept is the value of y when x = 0

so, the y-intercept = 0

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Which of the following equations best represents the regression line for the data given in the
True [87]

The regression equation for the data given is y= -8.57 -2.31x

Step-by-step explanation:

The first step is to form a table as shown below;

x           y          xy         x²         y²

1            4           4          1          16

2            1            2          4         1

3            5          15         9         25

4             10         40        16       100

5             16         80        25      256

6              19        114       36        361

7               15       105       49       225

28             60       360      140     984  ------sum

A linear regression equation is in the form of y=A+Bx

where ;

x=independent variable

y=dependent variable

n=sample size/number of data points

A and B are constants that describe the y-intercept and the slope of the line

Calculating the constants;

A=(∑y)(∑x²) - (∑x)(∑xy) / n(∑x²) - (∑x)²

A=(60)(140) - (28)(360)  / 7(140)-(28)²

A=8400 - 10080 /980-784

A= -1680/196

A= - 8.57

B= n(∑xy) - (∑x) (∑y) / n(∑x²) - (∑x)²

B= 7(360)-(28)(60) / 7(60) - (28)²

B=2520 - 1680 /420-784

B=840/-364

B= -2.31

y=A+Bx

y= -8.57 -2.31x

Learn More

Regression equation :brainly.com/question/12280902

Keywords : equations, regression line, data

#LearnwithBrainly

7 0
3 years ago
What is the solution of the system of equations <br> y =2x - 3
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Answer:

-37/5= y

x=11/5

Step-by-step explanation:

4x-3y=31

-3y=-4x+31 regroup it to match the other

-2 y=(2x-3)(-2) multiply by -2 to get -4x

-3y=-4x+31

-2y=-4x+6 adding

-5y=37 divide

-37/5= y

4x-3(-37/5)=31

x=11/5

7 0
3 years ago
What is 6.27 divided by 1000?
Effectus [21]

Answer:

0.00627 :)

Step-by-step explanation:

3 0
3 years ago
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Answer: 1\dfrac{3}{4}\text{ feet}

Step-by-step explanation:

Given: Length of sandwich = 10\dfrac12\text{ feet}=\dfrac{21}{2}\text{ feet}

Total people = 14

If everyone gets a same sized piece , then length of each piece should be

\dfrac{\text{ Length of sandwich}}{\text{Total people}}

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Hence, length of each piece = 1\dfrac{3}{4}\text{ feet}

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Answer:

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Question 8 = $16

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