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mote1985 [20]
1 year ago
5

Which statement describes the effect on the parabola y = x2 - 1 when it is changed to y = x2 +6?

Mathematics
1 answer:
zlopas [31]1 year ago
4 0

Initial:

y=x^2-1

Changed to:

y=x^2+6

As you can see the change is: from -1 to +6.

In a equation as follow:

y=x^2+k

The k is a transformation that moves up or down the graph of the function. If k is changed to a less value the graph moves down, If k is changed to a greather number the graph moves up.

In this case the graph moves up

To find the number of units the graph moves find the difference betwwen values of k:

6-(-1)=7

Then, the parabola y=x²-1 is moved 7 units up when it is changed to y=x²+6

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3 years ago
Select the correct answer.
masha68 [24]

Answer:

Option C

Step-by-step explanation:

We want to know the percentage of women among people who only prefer exercise.

We have the following information:

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Men                 7                 28                           15

Women          22                   18                           10

Then we get the total of people who prefer just exercise.

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Now the proportion of women who only prefer exercise is calculated as:

w = \frac{18}{46}\\\\w = 0.39

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This table is in option C.

C.

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Women             0.76                  0.39                   0.40

3 0
3 years ago
A culture started with 6,000 bacteria. After 6
aivan3 [116]

Answer:

9,400 bacteria at Hour 17.

Step-by-step explanation:

If at

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That means in 6 hours, the bacteria has grown by 1,200

Let's use a ratio:

hours : bacteria

   6     :   1,200

   1      :     200

  17     :   3,400

Now after 17 hours, 3,400 new bacteria has joined our group of 6,000

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9,400 bacteria should be present at Hour 17

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Whole number i think
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