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Makovka662 [10]
4 years ago
12

 I am so confused on functions! Please help! 

Mathematics
1 answer:
Gekata [30.6K]4 years ago
4 0
Functions are basically another way of expressing a way to get y or x or anything (mostly used for graphs) You will see functions like <em>f(x)=</em> <em>23y-5 </em>(that was made up). Basically the number in the parenthesis in front of the f is what you're finding. So the equation after the equal sign is how to find whatever is being found. So in this case, finding x can be pretty easy. By the way, when graphing this you have x as the run and y as the rise. <em />
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Look at this system of equations.<br> 2x +5 =9.5<br> 3x + 5y =10.5<br> What is the value of x+y
stiv31 [10]

Answer:

x = 2.25 y = 0.75

Step-by-step explanation:

2x = 9.5- 5

2x = 4.5

x = 4.5 ÷ 2

x = 2.25

know we now what is x so in the second one we evaluate x

3(2.25) + 5y = 10.5

6.75 + 5y = 10.5

5y = 10.5- 6.75

5y = 3.75

y = 3.75 ÷ 5

y = 0.75

that's it !

if you want to check your answer you can evaluate x and y so it will be like

2×2.25 + 5

= 4.5 + 5 = 9.5

and

3× 2.25 +5×0.75

= 6.75 + 3.75 = 10.5

6 0
3 years ago
What is the value of X?
sleet_krkn [62]

Answer:

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Step-by-step explanation:

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  6x = 9x -11

  11 = 3x . . . . . . . add 11-6x

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_____

The attached figure is drawn to scale.

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Step-by-step explanation:

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6 0
3 years ago
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Factor completely 2x3 + 4x2 + 6x + 12.
kondor19780726 [428]
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so this mean that the 4th choice will be right sure 
7 0
3 years ago
Read 2 more answers
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