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3 years ago

On a coordinate plane, the point (3, 6 ) lies on the graph of the function f(x)=3x^2-bx+12

Mathematics

2 answers:

masya89 [10]3 years ago

8 0

Answer:

b=11

Step-by-step explanation:

replace x with 3 and f(x) with 6 solve for b and you get b=11

Llana [10]3 years ago

6 0

First find the value of "b" by substituting the co ordinates.
then you get as b=8.
next prove that right hand side is equal to the left hand side.

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3 years ago

For which values of k does the system of linear equations have zero, one, or an infinite number of solutions? [Note: not all thr

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Answer:

The system has an infinite solution at k = 6, otherwise for any value of k, it has zero solution.

Step-by-step explanation:

Consider the system of linear equations:

$3x_{1} -x_{2}=2\;\;\;\;\;\;(1)\\ 9x_{1} -3x_{2}=k\;\;\;\;\;(2)$

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substitute in equation (2), we get

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ANSWER

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