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FromTheMoon [43]
2 years ago
15

HURRRRYYYY PLLSSS!!!! What are the slope and the y-intercept of the linear function that is represented by the table?

Mathematics
2 answers:
Naya [18.7K]2 years ago
4 0

Answer: The slope is   -2/5 and the y-intercept is -1/3

Evgen [1.6K]2 years ago
3 0
-2/5 is the slope and -1/3 is the y-intercept
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The data show systolic and diastolic blood pressure of certain people. Find the regression​ equation, letting the first variable
MakcuM [25]

Full Question:

The data show systolic and diastolic blood pressure of certain people. Find the regression equation, letting the first variable be the independent (x) variable. Find the best predicted diastolic pressure for a person with a systolic reading of 113. use a significance level of 0.05.

Systolic| 150 129 142 112 134 122 126 120

Diastolic| 88 96 106 80 98 63 95 64

a. What is the regression equation?

^y = __ + __x (Round to two decimal places as needed.)

b. What is the best predicted value?

^y is about __ (Round to one decimal place as needed.)

Answer:

A. yhat = a + bx = -10.64 + 0.75x

B. 74.0

Step-by-step explanation:

A. To find the regression equation here, we apply the formulas and then apply it to find the value of y given value of x:

calculate xbar and ybar which is the average of the variables:

Where n(number of values in x or y)=8

xbar = sum of x/n = 129.375

ybar = sum of y/n = 86.25

to calculate b

b= [Sum x^2 * Sum y - Sum x * Sum x*y] / [N*Sum x^2 - (Sum x)^2]

b = 0.74891

To calculate a

a = ybar - b * xbar = -10.64023

Regression equation:

y=mx+b= -10.64 + 0.75x

B. given x = 113,

y = -10.64023 + 0.74891 * 113

y= 74.0

5 0
3 years ago
Solve for x: 2x - 2 > 4x + 6
laiz [17]

Isolate the x. Subtract 4x from both sides, and add 2 to both sides

2x (-4x) - 2 (+2) > 4x (-4x) + 6 (+2)

2x - 4x > 6 + 2

Simplify. Combine like terms

-2x > 8

Isolate the x. Divide -2 from both sides. Note that you are <em>dividing a negative number</em>. When doing so, flip the sign.

-2x/-2 > 8/-2

x > 8/-2

x < -4

x < -4, or (1) is your answer

hope this helps

7 0
3 years ago
Is the following Inductive Generalization strong or weak? Apply and explain the three checks: 1. Is the appropriate group sample
arsen [322]

Answer:

For the reasons mentioned in the explanation section, it is indeed a weak generalization:  

Step-by-step explanation:

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3 years ago
If f(x) = 3x2 + 1 and g(x) = 1 – x, what is the value of (f – g)(2)?
hjlf
Hello,

(f-g)(x)=3x²+1-1+x=3x²+x
(f-g)(2)=3*2²+2=3*4+2=14


7 0
3 years ago
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How can you use a number line to compare and order numbers
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by arranging the line to the correct order in order to do whatever it is you need the number line for

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