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Ostrovityanka [42]
3 years ago
7

What is the relationship between x and y

Mathematics
1 answer:
solong [7]3 years ago
3 0

<u>Given</u>:

Given that the table with values of x and y.

We need to determine the relationship between x and y.

<u>Slope</u>:

The slope of the relation can be determined using the formula,

m=\frac{y_2-y_1}{x_2-x_1}

Substituting the points (2,11) and (4,9), we get;

m=\frac{9-11}{4-2}

m=\frac{-2}{2}

m=-1

Thus, the slope of the relation is m = -1.

<u>y - intercept:</u>

The y - intercept of the relation is the value of y when x = 0.

Hence, from the table, it is obvious that when x = 0, the value of y is 13.

Thus, the y - intercept of the relation is b = 13.

<u>Relationship between x and y:</u>

The relationship between x and y can be determined using the formula,

y=mx+b

Substituting m = -1 and y =13, we get;

y=-x+13

Thus, the relationship between x and y is y=-x+13

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The answer is the second option you are correct !
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Y = 2 - 4x input output
tester [92]

Every function is a rule which tells you how to associate inputs and outputs. The input, also known as independent variable, is often indicated with the letter x, while the output, also known as dependent variable, is often indicated with the letter y.

With this notation, we write y = f(x), read "y is a function of x", in the sense that the value of the variable y depends on the value of the variable x, and f is the function that tells you how y depends on x.

In your example, you have y = f(x) = 2-4x, which means "subtract four times the input (4x) from 2"

So, it doesn't matter which input you chose (i.e. the value for x), because you will always have to behave this way:

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Here are some examples of explicit calculations: if I choose x = 2 and input, the workflow will be

  • Pick an input value, 2
  • Multiply it by four to get 8
  • Subtract this number from 2: 2-8=-6

So, if the input is 2, the output is -6

Similarly, if we choose x = 0 as input, we have:

  • Pick an input value, 0
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So, if the input is 0, the output is 2. And so on: for every possible value for x you have the correspondant value for y, with the function f telling you how to associate one with the other.

4 0
2 years ago
Points A,B, and C are collinear. Points M and N are the midpoints of segments AB and AC. Prove that BC = 2MN
irinina [24]
Look at the picture.

1)|AM| = |MB| = x
|AN| = |NC| = y
|BC| = 2y - 2x = 2(y - x)
|MN| = y - x
Therefore |BC| = 2|MN|
2)|AM| = |MB| = x
|AN| = |NC| = y

|BC| = 2y - 2x = 2(y - x)
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Therefore |BC| = 2|MN|

6 0
3 years ago
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How many different twotwo​-letter passwords can be formed from the letters
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Answer:

70

Step-by-step explanation:

GIVEN: two two​-letter passwords can be formed from the letters  A, B, C, D, E, F, G and H.

TO FIND: How many different two two​-letter passwords can be formed if no repetition of letters is​ allowed.

SOLUTION:

Total number of different letters =8

for two two​-letter passwords 4 different are required.

Number of ways of selecting 4 different letters from 8 letters=^8C_4

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Hence there are 70 different two-letter passwords can be formed using 8 letters.

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Answer: 7

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if Martha jarred 6 liters of jam in 2 days,

she will jarred 3 litters of jam in one day

for 21 litters she will need 7 days

21/3=7

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