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dmitriy555 [2]
3 years ago
14

Which of the following represents a function? see image

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
5 0
The answer would be A
seraphim [82]3 years ago
4 0

Answer:

A.

Step-by-step explanation:

The answer is letter A because all of the X values are different.

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Solve the system of equations y = x + 5 and y = 5x - 11 using a graphical method.
tresset_1 [31]

You can use substitution for this.

x+5 = 5x -11

Combine like terms

16=4x

Divide 4 on both sides to isolate the x

x=4

Plug x=4 to one of the equations

y= 4 +5

Combine like terms

y=9

So the answer is A. (4,9)

I hope this helps you out a bunch hun :)

4 0
3 years ago
Please help 16 points
Murljashka [212]
16 because 36 divided by 9 is 4 so you have to multiply the 4 x 4
4 0
3 years ago
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The manager of an electronics store projects that the store should achieve more than $21,000 in revenue from TVs and DVD players
Alina [70]

Answer:

380d + 530t > 21,000

Step-by-step explanation:

Each DVD costs $380, we can represent that as:

380d

Each TV costs $530, we can represent that as:

530t

We add these together to find the total profit:

380d + 530t

The manager predicts that whatever the total profit is, will be more than $21,000. So, we represent that as this:

380d + 530t > 21,000

And that is the final answer.

<em>I hope this helps!!</em>

<em>- Kay :)</em>

7 0
3 years ago
How to find equation of line passing through the points (x,y)​
DochEvi [55]

First you must acknowledge that you are dealing with a line therefore you must write linear equation or linear function in this case.

Linear function has a form of,

y=mx+n

Then calculate the slope <em>m</em> using the coordinates of two points. Let say <em>A(x1, y1)</em> and <em>B(x2, y2)</em>,

m=\dfrac{\Delta{y}}{\Delta{x}}=\dfrac{y_2-y_1}{x_2-x_1}

Now pick a point either <em>A</em> or <em>B</em> and insert coordinates of either one of them in the linear equation also insert the slope you just calculated, I will pick point <em>A</em>.

y_1=mx_1+n

From here you solve the equation for n,

y_1=mx_1+n\Longrightarrow n=y_1-mx_1

So you have slope <em>m</em> and variable <em>n</em> therefore you can write down the equation of the line,

f(x)=m_{slope}x+n_{variable}

Hope this helps.

r3t40

3 0
3 years ago
If y = -4 when x = 10, find y when x = 5
vesna_86 [32]
To find Y you must divide two by each side, making y=-2
- I hope this helps :)
3 0
3 years ago
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