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Musya8 [376]
2 years ago
14

Which relation is a function?

Mathematics
1 answer:
prohojiy [21]2 years ago
3 0

The relation that is a function is:

b. y = 2x² - 3x + 7

<h3>When a relation is a function?</h3>

A relation is a function if each value of the input is mapped to only one value of the output.

Hence, when both x and y are squared, we have that x = \pm ay, hence it is not a function. This is the case for items a and c.

For item d, we have that the relation can be simplified as follows:

x = -y² + 3y

x = y(-y + 3)

The solution above, is associated to two values of y, hence it is also not a function. Then the function is given by:

b. y = 2x² - 3x + 7

In the solution, it can be seen that for each input x, only one value of y can be generated.

More can be learned about relations and functions at brainly.com/question/12463448

#SPJ1

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Step2247 [10]

Answer:

1) 6x = 21

2) x + y - 3

3) x/z = y

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Step-by-step explanation:

1. The product of a number x and 6 is 21

A product is a multiplication.  A product of a and b is a * b.

We then have a product of x and 6, that x * 6, which we write usually in the format 6x.

is 21: that means it's equal to 21....

so 6x = 21.

2. The sum of the quantity x- 3 and y  

The sum is an addition.  The sum of a and b is a + b.

In this case, the first part is x - 3, the second part is y

So, x - 3 + y, which we usually rewrite as x + y - 3

3. The quotient of x and z is y

A quotient is a division.

So, quotient of x and z is x/z.

x/z = y

4. The difference of 2 and x is p.

A difference is a subtraction.

Difference of 2 and x is 2 - x

2 - x = p

7 0
3 years ago
In a population of grasshoppers, the ratio of grasshoppers with a white marking to those without a white marking is 2:3. An ento
LekaFEV [45]

Answer:

D. 116

Step-by-step explanation:

Let the grasshoppers with a white marking be 2x.

Let the grasshoppers without a white marking be 3x.

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x = 290 / 5

x = 58

The grasshoppers with a white marking

= 2x

= 2 ( 58 )

= 116

3 0
3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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The slope of a line is given by; change in y ÷ change in x

i.e slope = \frac{-7 - -5}{-3 - -1} = \frac{-2}{-2} = 1

Taking another point (x,y) on the line.

Slope will be; \frac{y - -5}{x - -1} = 1

Cross multiplying gives; y + 5 = x + 1

Simplifying this equation gives us the equation of our line which is;

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6 0
3 years ago
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hodyreva [135]

Answer:

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Step-by-step explanation:


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