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Wittaler [7]
2 years ago
7

Write the point slope form of an equation of the line through the points (-7,7) and (4,1)

Mathematics
2 answers:
Andre45 [30]2 years ago
8 0
  • (-7,7)
  • (4,1)

Slope:-

  • m=1-7/4+7
  • m=-6/11

Equation in point slope form

  • y-7=-6/11(x+7)

Option A

jolli1 [7]2 years ago
3 0

Answer:

\textsf{A)} \quad y-7=-\dfrac{6}{11}(x+7)

Step-by-step explanation:

<u>Step 1:  Find the slope</u>

Define the points:

\textsf{let}\:(x_1,y_1)=(-7,7)

\textsf{let}\:(x_2,y_2)=(4,1)

Use the <u>slope formula</u> to find the slope:

\textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{1-7}{4-(-7)}=-\dfrac{6}{11}

<u>Step 2:  Find the equation</u>

Use the found slope from step 1 together with one of the given points in the <u>point-slope form of a linear equation</u>:

\implies y-y_1=m(x-x_1)

\implies y-7=-\dfrac{6}{11}(x-(-7))

\implies y-7=-\dfrac{6}{11}(x+7)

<u>Conclusion</u>

Therefore, the equation of the line that passes through the points (-7, 7) and (4, 1) is:

y-7=-\dfrac{6}{11}(x+7)

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Factor –3y – 18 and choose the correct option.
den301095 [7]
<h3>Factor –3y – 18 is:  -3(y + 6)</h3>

<em><u>Solution:</u></em>

Given that we have to factor -3y - 18

Use the distributive property,

a(b + c) = ab + bc

From given,

-3y - 18

Factor out the greatest common factor of 3 and 18

The factors of 3 are: 1, 3

The factors of 18 are: 1, 2, 3, 6, 9, 18

Then the greatest common factor is 3

Factot out 3 from given expression

-3y - 18 = 3( - y - 6)

Or else we can rewrite as,

-3y - 18 = -3(y + 6)

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3 years ago
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mojhsa [17]

Answer:

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Step-by-step explanation:

There are 3 kids ages 9-10, so that's the first 3.

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3 0
3 years ago
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vova2212 [387]

Answer:

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Step-by-step explanation:

If the function was proportional, when the number of hours spent riding the bicycle is equal to 0, the total cost of renting the bicycle would also be 0. In other words, the function would be proportional if y=0 when x=0. However, this is not the case.

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Plug 0 into the equation as x

y=15(0)+10\\y=10

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I hope this helps!

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Looking at the equation 2y=18, we see that if we want to isolate y, we need to divide it by 2 - because we're multiplying it by 2, and 2 times a number divided by 2 is just the number.

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