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PolarNik [594]
3 years ago
12

39. State the equation for the line described below.

Mathematics
1 answer:
devlian [24]3 years ago
8 0

Answer:

Step-by-step explanation:

39). y = -\frac{7}{8} x + 3

40). m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }

y - y_{1} = m( x - x_{1} )

(- 7, 5)

( - 12, 4)

m = ( 4 - 5 ) / ( - 12 + 7) = 1/5

y - 5 = (1/5)(x + 7) ⇒ y = \frac{1}{5} x + 6.4

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Write an equation of the line below.<br> (0,-2) (8,-4)
olga_2 [115]

Answer:

<h2>y =  -  \frac{1}{4} x - 2</h2>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

First of all to find the equation of the line we must first find the slope.

The slope of the line using points

(0,-2) (8,-4) is

<h3>m =  \frac{ - 4 + 2}{8 - 0}  =  -  \frac{2}{8}  =  -  \frac{1}{4}</h3>

Now using one of the points and the slope we can find the equation of the line.

Equation of the line using point (0 , - 2) and slope - 1/4 is

<h3>y + 2 =  -  \frac{1}{4} (x - 0) \\ y + 2 =  -  \frac{1}{4} x</h3>

We have the final answer as

<h3>y =  -  \frac{1}{4} x - 2</h3>

Hope this helps you

6 0
4 years ago
Darlene Fine wants to have at least $50,000 in her savings account in 10 years. If her account pays 3.6% interest compounded ann
marshall27 [118]
In this problem the question asked is what principal should be invested on a rate of interest of 3.6% for 10 years to get the totals amount as 50000$
the formula for compound interest is
A=P*(1+R/100)^T
we shall replace the formula
50000=X*(1+3.6/100)^10
50000=x*(100/100+3.6/100)^10
50000=x*(103.6/100)^10
50000=X*(1.036)^10
50000=1.4242x
50000/1.4242=X
35107.42=X
hope u found this useful
feel free to check
pls out this as a brainliest answer please
6 0
4 years ago
What is 12x²y - 8x²y² + 11x²y - 4x³y² - 9xy² simplified?
Morgarella [4.7K]
12x^2y-8x^2y^2+11x^2y-4x^3y^2-9xy^2=22x^2y-8x^2y2-4x^3y^2-9xy^2
7 0
3 years ago
What is the value of x? 2,3,6,7
Kruka [31]
I think it’s 7 because 7+4=11 and the opposite side is 11
It could also be 6
3 0
3 years ago
Evaluate a = 6, b = 5, c = 9 a*b*c/2 + 2(a*b*c) = ?
Vladimir [108]

Answer:

675

Step-by-step explanation:

7 0
3 years ago
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