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storchak [24]
3 years ago
12

Explain the error. A student was given a graph and asked to use the vertical line test

Mathematics
1 answer:
11111nata11111 [884]3 years ago
4 0

Answer:

The answer is C.

There is a horizontal line test but the question asks to use the vertical line test. Using the horizontal line test you would get that the function is not one to one but using the vertical line test you would get its one to one.

You might be interested in
Which side of the equation 12.6v = 12 - 15.5v would you isolate the variable terms? Why?
lozanna [386]
The left side, because you only need to move one thing, and you don't need to subtract after that. (you can add, much more easier)

hope this helps
4 0
3 years ago
What is 5 (3-4x) = 7- (4-x)
a_sh-v [17]

Answer: x=4/7

Step-by-step explanation:

15-20x=x+3

15-20x-15=x+3-15

-20=x-12

-20x-x=x-12-x

-21x=-12

-21x/-21=-12/-21

x=4/7

6 0
3 years ago
What is the value of 9(n+2)−5n for n=14?<br> 3<br> 9<br> 10<br> 19
Murrr4er [49]
If you want to know the value of a  function, you need to substitute the variable (here n) for the value:

so in the function

9(n+2)−5n

we substitute n with 14:

<span>9(14+2)−5*14

first calculate the inside of the bracket:

</span>
<span>9*16−5*14

9 times 16 is 144

144-5*14

5*14 is 70, so we have

144-70=74

so the answer should actually be 74!

Perhaps you mistyped the questions? can you check it again, please?

</span>
5 0
3 years ago
HELP ASAP! The number of entertainment websites in 1995 wass 54. By 2004 there were 793 entertainment website..
AleksandrR [38]
<h3>Answer: Choice A. 82 websites per year</h3>

=============================================================

How I got that answer:

We have gone from 54 websites to 793 websites. This is a change of 793-54 = 739 new websites. This is over a timespan of 2004-1995 = 9 years.

Since we have 739 new websites over the course of 9 years, this means the rate of change is 739/9 = 82.1111... where the '1's go on forever. Rounding to the nearest whole number gets us roughly 82 websites a year.

----------

You could use the slope formula to get the job done. This is because the slope represents the rise over run

slope = rise/run

The rise is how much the number of websites have gone up or down. The run is the amount of time that has passed by. So slope = rise/run = 739/9 = 82.111...

In a more written out way, the steps would be

slope = rise/run

slope = (y2-y1)/(x2-x1)

slope = (793 - 54)/(2004 - 1995)

slope = 739/9

slope = 82.111....

3 0
3 years ago
How to solve this question
Viefleur [7K]

Answer:

7x+21 = 7x + 21

Step-by-step explanation:

7(x+3)=6-(-7x - 15)

L.H.S

=7(x+3)

=7x+21 (multiply 7 by (x+3))

R.H.S:

=6-(-7x - 15)

= 6+7x+15 (multiply the -ive sign in the bracket)

= 7x + 21 ( adding 15 and 6)

now compare the two sides

7x+21 = 7x + 21 hence we prove that L.H.S= R.H.S

4 0
3 years ago
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