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2 years ago

Complete the equation of the line through 2,1 and 5,-8

Mathematics

2 answers:

SOVA2 [1]2 years ago

5 0

Answer:

Step-by-step explanation:

Hello : let A(2,1) B(5,-8)

the slope is : (YB - YA)/(XB -XA)

(-8-1)/(5-2) = -9/3=-3

an equation is : y=ax+b a is a slope

y = -3x +b

the line through point (2,1) : 1= -(3)(2)+b

b = 7

the equation is : y =-3x+7

Neko [114]2 years ago

3 0

Answer:

y - 1 = -3(x - 2)

Step-by-step explanation:

As we move from the point (2, 1) to the point (5, -8), x (the run) increases by 3 and y (the rise) decreases by 9. Thus, the slope of this line is

m = rise / run = -9/3, or m = -3.

Then the equation of the line (in point-slope form) is

y - 1 = -3(x - 2)

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25 points

Zielflug [23.3K]

Answer: The correct answer is: [B]:

_________________________________________

" $\frac{-3}{ x}$ " .

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Step-by-step explanation:

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Note: A number; "divided by a variable" ; is Not a "polynomial" .

Answer choice: [B]: " $\frac{-3}{ x}$ " ;

is a "number; divided by a "variable" ; and as such, is Not a "polynomial".

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8 0

2 years ago

Can you see the conversion pattern? Can you make up rules for converting between the following units of measuring weight? Write

andrew11 [14]

The places move over one to the right.

Hope this helps! :)

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2 years ago

solve using a system of equations. a pharmacist wants to mix two solutions to obtain 350 cc of a solution that has a 14% concent

Pavlova-9 [17]

Answer:

105 cc of 7% solution

245 cc of 17% solution

Step-by-step explanation:

If x = volume of 7% solution, and y = volume of 17% solution, then:

x + y = 350

0.07x + 0.17y = 0.14(350)

Solve with substitution:

0.07x + 0.17(350 − x) = 0.14(350)

0.07x + 59.5 − 0.17x = 49

10.5 = 0.10x

x = 105

y = 245

7 0

2 years ago

Please help I’ll give brainliest

s344n2d4d5 [400]

Answer:

R = 13%

Step-by-step explanation:

P = $4000

I = $780

T = 18 months = 18/12 years

$I = \frac{PRT}{100} \\\\780 = \frac{ 4000 \times R \times \frac{18}{12}}{100}\\\\780 = \frac{6000 \times R }{100}\\\\780 = 60R\\\\R = \frac{780}{60} = 13 \%$

5 0

2 years ago

$1,451.02 _____ $1,541.02

Likurg_2 [28]

Answer:

The second number ($1,541.02) is greater

Step-by-step explanation:

In the 100s place of the second number is a 5 and in the first a 4

Even though they have the same 1000s number 500 is larger that 400

7 0

2 years ago

Read 2 more answers