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lukranit [14]
4 years ago
9

Find the equation of the line that passes through the points (–2, 4) and (1, 2).

Mathematics
1 answer:
Stolb23 [73]4 years ago
3 0

Answer:

The answer to your question is c)    y = (-2/3)x + 8/3    

Step-by-step explanation:

Data

A (-2, 4)

B (1, 2)

Process

1.- Calculate the slope of the line

-Formula

  m = (y2 - y1)/(x2 - x1)

  x1 = -2    y1 = 4    x2 = 1   y2 = 2

-Substitution

  m = (2 - 4) / (1 + 2)

-Simplification

  m = -2/3

2.- Find the equation of the line

Formula

    y - y1 = m(x - x1)

-Substitution

   y - 4 = -2/3 (x + 2)

-Simplify

   y - 4 = (-2/3)x - 4/3

   y = (-2/3)x - 4/3 + 4

   y = (-2/3)x - 4/3 + 12/3

-Result

   y = (-2/3)x + 8/3    

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Answer:

C

Step-by-step explanation:

Quadratic formula is used only to solve the quadratic equations .

Means the equation of the form

ax^{2} +bx+c=0

In this the x^2 part is must because that only makes the equation a quadratic.

Looking at the four options given to you , only the option C has the missing x^2 term, which makes it a linear equation and hence the quadratic formula cannot be applied there .

So the right option for your question with the quadratic formula is

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3 years ago
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Roman55 [17]

Answer:

Breadth = 10 cm.

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Step-by-step explanation:

The perimeter  of the square = 4*12 = 48 cm.

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28 + 2b = 48

2b = 20

b = 10 cm.

A square encloses more area than a rectangle for a given length of wire.

Area  of the square = 12^2 = 144cm^2  and

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Alex leaves school to go home. He walks 11 meters North and then 10 meters West. How far is Alex from the school?
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Answer:

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Step-by-step explanation:

c^2 = a^2+b^2

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