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3 years ago

Explain how to use a graph of the function f(x) to find f(3).

Mathematics

2 answers:

meriva3 years ago

5 0

Answer:

For a function determining if it is a function or not is if they have two of the same x values it’s not a function if they don’t it is a function

Step-by-step explanation:

7nadin3 [17]3 years ago

5 0

Answer:

For f(3), the input is 3 and you are looking for the output.

To determine the function's value when x = 3, go to the value of 3 on the x-axis and then locate a point on the graph for that value of x.

Determine the value of y from the y-axis at that location on the graph.

Step-by-step explanation:

das all you need

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Please help me find the function to y

Fed [463]

Answer:

(-1, -7) (0, -1) (1, 5) (5, 29)

Step-by-step explanation:

okay so the equation is y = 6x - 1

all you have to do is plug in all the x values to get the y

y = 6(-1) - 1

y = - 6 - 1

y = -7

y = 6(0) - 1

y = 0 - 1

y = -1

y = 6(1) - 1

y = 6 - 1

y = 5

y = 6(5) - 1

y = 30 - 1

y = 29

8 0

3 years ago

PLZ HELPPP will mark the brainliest!!!

Aleks [24]

12.6 because it has to be the same as ED

6 0

3 years ago

Read 2 more answers

Question 1,2, and 3 how do i factor those? Can you show the work and explain how?

DiKsa [7]

1: $3n^{2}+9n+6$

notice that each part is divisible by 3

$3n^{2}$ ÷ 3 = $n^{2}$

9n ÷ 3 = 3n

6 ÷ 3 = 2

so it becomes $3(n^{2} +3n+2)$

3n can be rewritten as 2n+n

-you want to rewrite it into two numbers that multiply to the number that's alone (in this case 2)

which would get you

$3(n^{2} +2n+n+2)$

Now that it's rewritten, you can factor out n + 2 from the equation.

the answer is

3(n+2)(n+1)

And you can check that by multiplying (n+2)(n+1) which is $n^{2} +2n+n+2$ and then each of those by 3, which is $3n^{2} +6n+3n+6$ or $3n^{2}+9n+6$ , our origional equation

2: $28+x^{2} -11x$

So I rewrote this as $x^{2} -11x+28$ (it's the same thing, just reordered using the commutative property)

now -11x can be rewritten as -4x-7x

(remember, the two numbers should multiply to equal 28, which is our constant.)

$x^{2} -4x-7x+28$

now we can factor out x from the first expression and -7 from the second

$x(x-4)-7(x-4)$

and lastly you factor out x-4,

which would give you

(x-4)(x-7)

Make sure to check your work and make sure it multiplies to $x^{2} -11x+28$

3: $9x^{2} -12x+4$

The first thing I notice when looking at this problem is that both 9 and 4 are perfect squares. Not only that, but they are the squares of 2 and 3, which are products of -12

So if you rewrite 9 as $3^{2}$ and 4 as $2^{2}$ , the equation becomes