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3 years ago

What are the slope and the y-intercept of the line of best fit on this scatter plot?

Mathematics

2 answers:

Leno4ka [110]3 years ago

8 0

Answer:

the y-intercept is 8 and the slope is -4/3 .

Step-by-step explanation:

Over [174]3 years ago

6 0

Answer:

the y-intercept is 8 and the slope is -4/3 .

Step-by-step explanation:

got it right

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1. Which describes the transformation shown below? PLS HURRY HELP!!!

saul85 [17]

Answer:

C because i had this before and got it right

5 0

3 years ago

HELP with part (b) will mark brainlest!!!!!

GREYUIT [131]

Answer is 2(x,y) —> (3x, 3y)

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3 years ago

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Evaluate the line integral, where c is the given curve. (x + 9y) dx + x2 dy, c c consists of line segments from (0, 0) to (9, 1)

viktelen [127]

$\displaystyle\int_C(x+9y)\,\mathrm dx+x^2\,\mathrm dy=\int_C\langle x+9y,x^2\rangle\cdot\underbrace{\langle\mathrm dx,\mathrm dy\rangle}_{\mathrm d\mathbf r}$

The first line segment can be parameterized by $\mathbf r_1(t)=\langle0,0\rangle(1-t)+\langle9,1\rangle t=\langle9t,t\rangle$ with $0\le t\le1$ . Denote this first segment by $C_1$ . Then

$\displaystyle\int_{C_1}\langle x+9y,x^2\rangle\cdot\mathbf dr_1=\int_{t=0}^{t=1}\langle9t+9t,81t^2\rangle\cdot\langle9,1\rangle\,\mathrm dt$
$=\displaystyle\int_0^1(162t+81t^2)\,\mathrm dt$
$=108$

The second line segment ( $C_2$ ) can be described by $\mathbf r_2(t)=\langle9,1\rangle(1-t)+\langle10,0\rangle t=\langle9+t,1-t\rangle$ , again with $0\le t\le1$ . Then

$\displaystyle\int_{C_2}\langle x+9y,x^2\rangle\cdot\mathrm d\mathbf r_2=\int_{t=0}^{t=1}\langle9+t+9-9t,(9+t)^2\rangle\cdot\langle1,-1\rangle\,\mathrm dt$
$=\displaystyle\int_0^1(18-8t-(9+t)^2)\,\mathrm dt$
$=-\dfrac{229}3$

Finally,

$\displaystyle\int_C(x+9y)\,\mathrm dx+x^2\,\mathrm dy=108-\dfrac{229}3=\dfrac{95}3$

5 0

3 years ago

7/7, solve for k, explain too please

ludmilkaskok [199]

Answer:

k = 7.3333333 ...

You can round accordingly of write the fraction form

Step-by-step explanation:

4/k = 6/11

6 ÷ 4 = 1.5

11 ÷ 1.5 = 7.3333333 ... (repeating)

4/7.333 = 6/11

7 0

3 years ago

Please help me with this problem:)

krok68 [10]

Answer:

(2,1)

Step-by-step explanation:

3x+y = 7

-2x +y = -3

Solve the second equation for y by adding 2x to each side

-2x+2x +y = -3+2x

y = -3 +2x

Substitute into the first equation

3x+ (-3+2x) = 7

Combine like terms

5x -3 = 7

Add 3 to each side

5x-3+3 = 7+3

5x = 10

Divide by 5

5x/5 = 10/5

x=2

Now we need to solve for y

y = -3 +2x

y = -3 +2(2)

y = -3+4

y =1

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4 years ago

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