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vovangra [49]
3 years ago
14

Which ordered triple is plotted?

Mathematics
1 answer:
Naddik [55]3 years ago
7 0

Answer:

(3,5,4)

Step-by-step explanation:

For x, y, z axis plots, we see how many units it goes in x direction(front/back), how many units in y(right/left) direction, and how many units in z direction (up/down).

Looking at the graph, we see that point goes in x-direction 3 units positive, so x point is +3.

Also, looking at y-direction, it goes 5 units to the right, which is +5 units. So y = +5

Then, the point then goes UP (which is positive z direction) 4 units, so that's z = +4

The ordered triple is (3,5,4)

2nd answer choice is right

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vova2212 [387]

Answer:

a = 2, b = -9, c = 3

Step-by-step explanation:

Replacing x, y values of the points in the equation y = a*x^2 + b*x +c give the following:  

(-1,14)

14 = a*(-1)^2 + b*(-1) + c  

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Rearranging:

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This is a linear system of equations with 3 equations and 3 unknows. In matrix notation the system is A*x = b whith:

A =

1    -1  1

4    2  1

25  5  1

x =

a  

b

c

b =

14

-7

8

Solving A*x = b gives x = Inv(A)*b, where Inv(A) is the inverse matrix of A. From calculation software (I used Excel) you get:

inv(A) =  

0.055555556 -0.111111111   0.055555556

-0.388888889 0.444444444   -0.055555556

0.555555556 0.555555556 -0.111111111

inv(A)*b

2

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3

So, a = 2, b = -9, c = 3

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3 years ago
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Answer:

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Answer:

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