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marishachu [46]
4 years ago
5

Which linear function includes the points (3,9) and (-2,-11)

Mathematics
2 answers:
Murrr4er [49]4 years ago
7 0
General\ equation\ for\ line\ in\ slope\ intercept\ form:\\\\y=ax+b\\\\To\ find\ a\ and\ b\ substitude\ points\ (3,9),\ (-2,-11)\ into\ equation\\\\ \left \{ {{9=3a+b}\ \ \ \ \atop {-11=-2a+b\ |*-1}} \right.\\\\ \left \{ {{9=3a+b}\ \ \ \ \atop {11=2a-b}} \right.\\+----\\\\Addition\ method\\\\20=5a\ \ |:5\\\\a=4\\ b=9-3a\\b=9-3*4=9-12=-3\\\\Answer\ y=4x-3

Charra [1.4K]4 years ago
3 0
(2,1) is the answer
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A number is multiplied by 5. If 5 is added to the product, you get 10. What is the number?
maria [59]

Answer:

The unknown number is 1.

Step-by-step explanation:

You have to form an expression. So let's make the unknown number as x. Firstly, a number is multiplied by 5 :

x \times 5

= 5x

Secondly, 5 is added to product and you will get 10 :

5x + 5 = 10

Lastly, you have to solve :

5x + 5 = 10

5x = 10 - 5

5x = 5

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x = 1

4 0
3 years ago
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In point slope form, required equation is given by (y - y1) = m(x - x1); where m = (y2 - y1)/(x2 - x1) = (4 + 1)/(8 - 2) = 5/6

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3 0
3 years ago
Suppose that Andrea told you that “Blake and I started out with the same number of marbles, but I gave him one of mine. Now Blak
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1 year ago
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Answer:

Step-by-step explanation:

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Simply take away the 4 in the amount of money

Leaving: $243.60

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Mr.Chan got 121.8 worth of interest a year

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