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disa [49]
2 years ago
5

Drag the correct description to tell whether the graph represents a function.

Mathematics
1 answer:
Anna007 [38]2 years ago
4 0

Using the function concept, it is found that:

  • The 1st graph is not a function.
  • The 2nd and the 3rd graph are functions.

<h3>What is a function?</h3>
  • In a <em>function</em>, <u>one value of the input can be related to only one value of the output</u>.
  • In a graph, it means that for each value of x(horizontal axis), there can only be one respective value of y(vertical axis), that is, there cannot be point that are aligned vertically.

In this problem:

  • On the <em>first </em>graph, there are points that are aligned vertically, for example, when x = -2, y = -2 and y = 2, hence, it is not a function.
  • On the <em>2nd and on the 3rd graph</em>, there are no points aligned vertically, hence, they are functions.

To learn more about the function concept, you can take a look at brainly.com/question/12463448

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2 years ago
I need help with 1-3 i don’t understand that problems and its already over due
Nina [5.8K]

Step-by-step explanation:

For a quadratic equation y = ax² + bx + c, the vertex (the maximum or minimum point) is at x = -b/(2a).

1) y = -0.5t² + 2t + 38

The maximum is at:

t = -2 / (2 × -0.5)

t = 2

The maximum height is:

y = -0.5(2)² + 2(2) + 38

y = 40

The coordinates of the vertex are (2, 40).  That means the missile reaches a maximum height of 40 km after 2 minutes.

2) y = -4.9t² + 12t + 1.6

The maximum is at:

t = -12 / (2 × -4.9)

t = 1.22

The maximum height is:

y = -4.9(1.22)² + 12(1.22) + 1.6

y = 8.95

The coordinates of the vertex are (1.22, 8.95).  That means the missile reaches a maximum height of 8.95 m after 1.22 seconds.

3) y = -0.04x² + 0.88x

The maximum is at:

x = -0.88 / (2 × -0.04)

x = 11

The maximum height is:

y = -0.04(11)² + 0.88(11)

y = 4.84

The maximum height of the tunnel is 4.84 meters.

The maximum width is when y = 0.

0 = -0.04x² + 0.88x

0 = -0.04x (x − 22)

x = 22

The maximum width is 22 feet.

7 0
3 years ago
The _____ is used to measure volume<br> 1) liter<br> 2) gram<br> 3) meter
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3 years ago
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Jonathan goes to the store and purchases 3 pencils for 0.28 each, and y number of erasers for 0.38 each. Write an expression tha
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Keywords


linear equation, variables


Step 1


Define the variables


Let


x-----> number of erasers


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we know that




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therefore


the answer is y = 0.84 + (0.38)x



5 0
3 years ago
Read 2 more answers
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Answer:

The distance between (0,3) and (7,3) is 7

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