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3 years ago

15

Each set of ordered pairs represent a function. writ a rule that represents the function. can you help? (0,1) (1,3) (2,9) (3,27)

(4,81)

1 answer:

Hoochie [10]3 years ago

3 0

X1-x2/y1-y2 is what you need for ordered pair

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What is y=2x+3 on a graph??

Anettt [7]

Answer:

points on the line: (0,3) (1,4) (-4,-5)

Step-by-step explanation:

put those points on the graph and just draw a line that connect to all of them

3 0

3 years ago

In one round robin chess tournament, 36 games were played. How many players entered in the tournament?

ICE Princess25 [194]

$\displaystyle
\binom{n}{2}=36\\\\
\dfrac{n!}{2!(n-2)!}=36\\
\dfrac{n(n-1)}{2}=36\\
n(n-1)=72\\
n^2-n-72=0\\
n^2-9n+8n-72=0\\
n(n-9)+8(n-9)=0\\
(n+8)(n-9)=0\\
n=-8 \vee n=9$

The number of players can't be negative, so there was 9 players.

6 0

4 years ago

For the function

jeka57 [31]

Answer:

x = 1

Step-by-step explanation:

For a quadratic function $f(x)=ax^2+bx+c$ , the axis of symmetry is

$x=-\frac{b}{2a}$ .

This comes from using part of the Quadratic Formula for finding zeros of the function:

$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a} = \frac{-b}{2a} \pm \frac{\sqrt{b^2-4ac}}{2a}$

See the -b/(2a) in the first term? That's the x-coordinate of the vertex (turning point) of the parabolic graph of the function. The axis of symmetry goes through the vertex.

5 0

3 years ago

Choose the function that represents the data in the table.

Yakvenalex [24]

The answer would be b and c because they are the same. B in the y=Mx+b is the y intercept and the table shows the y intercept is 6. Also for every unit that x increases by y increases by 0.5 so that is why b and c would be correct.

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3 years ago

Tanya is making homemade greeting cards the data table below represents the amount she spends in dollars f(x) in terms of the nu

Olenka [21]

The function that best represents the data is y = 0.75x + 4.5. The slope in this case represents the increase in the amount she spends in $ due to the number of cards she makes. The intercept with the Y axis (4.5) means that she has an expense of 4.5 $ without having made any card yet.

4 0

3 years ago