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Svetlanka [38]
2 years ago
10

What is the equation in point slope form of the line that passes through the point ( 2 , -4 ) and has a slope of 4?

Mathematics
2 answers:
lana66690 [7]2 years ago
3 0

Answer:

y+4=4(x-2)

Step-by-step explanation:

point slope form is y-y_{1} =m(x-x_{1} ), where m=slope

Plug it in

y-(-4) = 4(x-2)

y+4=4(x-2)

erica [24]2 years ago
3 0
Y+4=4(x-2).

Point slope form is y-y1=m(x-x1)

We can insert the equation by putting our slope (4) as m. Our y1 (-4) counters the subtraction sign, so that side of the equation will be y+4. Our x1 is positive, so it can be easily inserted into the formula (x-2).

Basically; insert the terms into the point-slope formula :)!

Hope this helped
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Use an algebraic approach to solve the problem.
qaws [65]

Answer:

Her first exam score was a 78, her second exam score was a 89, and his third exam score was a 94.

Step-by-step explanation:

Use the formula for the mean: sum of elements / number of elements

Let x represent her first exam score.

Her second exam score can be represented by x + 11, since it was 11 points better than her first.

Her third exam score can be represented by (x + 11) + 5, since it was 5 points better than her second.

Plug in all of these expressions into the mean formula. Plug in 87 as the mean, and plug in 3 as the number of elements (since there are 3 scores):

mean = sum of elements / number of elements

87 =  ( (x) + (x + 11) + (x + 11) + 5 ) / 3

Add like terms and solve for x:

87 = (3x + 27) / 3

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So, her first score was a 78.

Find her second score by adding 11 to this:

78 + 11 = 89

Find her third score by adding 5 to the second score:

89 + 5 = 94

Her first exam score was a 78, her second exam score was a 89, and his third exam score was a 94.

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2 years ago
What is the remainder in the synthetic division problem
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Step-by-step explanation:

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