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fgiga [73]
4 years ago
10

(3,4) (-3,8) ( 6,8) is a function?

Mathematics
1 answer:
balu736 [363]4 years ago
4 0

The relation {(3, 4), (-3, 8), (6, 8)}, <u>is</u> a function, because

all the x–coordinates are different.

It's important to understand that even though two of the y-coordinates

are the same, this relation is still a function.

The y-coordinates do not have any affect

on whether the relation is a function.

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How do you graph? <br> y=−4/3x+8y
trasher [3.6K]

How do we graph anything? Make a table of values for x and y and then plot each point. After plotting each point on the xy-plane, connect each point with a straight line or curve (depending on the function).


In this case, we must first isolate y.


y = (-4/3)x + 8y


y - 8y = (-4/3)x


-7y = (-4/3)x


y = (-4/3)x ÷ (-7)


y = (4/21)x


Now follow the steps above.


8 0
3 years ago
1/4 ,1/2, 1, 2, solve for a10
LUCKY_DIMON [66]

Answer: {a}_{10} = 128

Step-by-step explanation:

3 0
3 years ago
X+2/x^2+2x-3/x+2/x^2-x
Sergio [31]

Answer:

2x3 - 3x + 4

 ———————

      x2  

Step-by-step explanation:

Step  1  :

                  2

Simplify   ——

                  x2

Rewriting the whole as an Equivalent Fraction :

4.1   Adding a fraction to a whole

Rewrite the whole as a fraction using  x2  as the denominator :

           x             x • x2

    x =  —  =  ——————

            1                 x2  

Let us test ....

  P    Q    P/Q    F(P/Q)     Divisor

     -1       1        -1.00        5.00    

     -1       2        -0.50        5.25    

     -2       1        -2.00        -6.00    

     -4       1        -4.00        -112.00    

     1       1        1.00        3.00    

     1       2        0.50        2.75    

     2       1        2.00        14.00    

     4       1        4.00        120.00    

Polynomial Roots Calculator found no rational roots

Final result :

 2x3 - 3x + 4

 ————————————

      x2    

Processing ends successfully

plz mark me as brainliest :)

3 0
4 years ago
Find the approximate area between the curve f(x) = -4x² + 32x and on the x-axis on the interval [0,8] using 4 rectangles. Use th
Doss [256]

Split up the interval [0, 8] into 4 equally spaced subintervals:

[0, 2], [2, 4], [4, 6], [6, 8]

Take the right endpoints, which form the arithmetic sequence

r_i=2+\dfrac{8-0}4(i-1)=2i

where 1 ≤ <em>i</em> ≤ 4.

Find the values of the function at these endpoints:

f(r_i)=-4{r_i}^2+32r_i=-16i^2+64i

The area is given approximately by the Riemann sum,

\displaystyle\int_0^8f(x)\,\mathrm dx\approx\sum_{i=1}^4f(r_i)\Delta x_i

where \Delta x_i=\frac{8-0}4=2; so the area is approximately

\displaystyle2\sum_{i=1}^4(-16i^2+64i)=-32\sum_{i=1}^4i^2+128\sum_{i=1}^4i=-32\cdot\frac{4\cdot5\cdot9}6+128\cdot\frac{4\cdot5}2=\boxed{320}

where we use the formulas,

\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2

\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6

6 0
3 years ago
During a certain epidemic, the number of people that are
qaws [65]

9514 1404 393

Answer:

  1367 people

Step-by-step explanation:

The wording "a rate proportional to the number" indicates the function is exponential. The growth factor is 1200/1000 = 1.2 in 7 days, so the exponential function can be written ...

  i(t) = 1000(1.2^(t/7))

After 12 days, the number infected is modeled as ...

  i(12) = 1000(1.2^(12/7)) ≈ 1367

About 1367 people are infected 12 days after discovery.

8 0
3 years ago
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