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mestny [16]
2 years ago
15

Complete the equation of the line through (2,1) and (5,-8) WORTH 20 POINTS

Mathematics
2 answers:
ale4655 [162]2 years ago
7 0

Answer:


First we calculate the slope (which is called "m".


Slope = m = (Y2 -Y1) ÷ (X2 -X1)


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


We next fill in this equation: b = y -mx


We know m = -3 and we can choose a point (2, 1) to calculate "b"


b = 1 --3 * 2 b = 7


Putting this into y = mx +b


y = -3x +7


s2008m [1.1K]2 years ago
6 0
This is pretty much what it is- when you do it try to get your lines straighter
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Step-by-step explanation:

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3 years ago
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Hi there! With equations like this we want to get our variable on one side and and our constant on the other.

So with 2x + 3 = -7 you'd subtract the constant 3 from both sides of the equal sign to get 2x = -10, then you'd divide both sides by 2 to get x = -5. If you double check your work by replacing x in the original equation with our answer we'd find that 2(-5) + 3 = -7 is correct.

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4 0
3 years ago
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12.5

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Now we know that 12.5 is equivalent to 1/8 but let's double check.

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3 years ago
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spayn [35]
What is the area of the shaded region and the circle inside?

r=20,1m+13,2m=33,3m
A_1=\pi r^2
A_1=33,3^2\pi
A_1=1108,89\pi

What is the area of the circle inside?

A_2=20,1^2\pi
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The answer: 2213,32 :)
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