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serious [3.7K]
3 years ago
13

You can replace any letter in function notation with any number.

Mathematics
1 answer:
Vikentia [17]3 years ago
5 0
A. That would be True
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PLZZZ HELP DUE IN 5 MINS
iris [78.8K]

Answer:

{(2, 9), (5, 9), (1, -6), (-5, 5), (2,9), (5,9), (1,−6), (−5,5)}

Step-by-step explanation:

recall that for a function to be valid, every input must give one and only 1 output. (i.e every x-ordinate must have only one unique corresponding y-ordinate)

I have highlighted in bold and underlined the entries for each of the other choices where an x-value gives more than one possible y-value, hence these are not functions. only the first option satisfies this condition:

{(2, 9), (5, 9), (1, -6), (-5, 5), (2,9), (5,9), (1,−6), (−5,5)} Every x-value has a unique y-value, so it is possible that this is a function.

{<em><u>(6, 6)</u></em>, <em><u>(6, 8)</u></em>, (-8, -7), (-3, -8), (6,6),(6,8),(−8,−7),(−3,−8)}  (not a function)

{(1, 8), (9, -3), <u><em>(7, -4)</em></u>, <u><em>(7, -6)</em></u>, (1,8),(9,−3),(7,−4),(7,−6)} (not a function)

{<u><em>(-5, -1)</em></u>, (-3, -7), <u><em>(-5, 3)</em></u>, (-7, -4), (−5,−1),(−3,−7),(−5,3),(−7,−4)} (not a function)

4 0
3 years ago
Solve 2x² - 11x + 5 = 0.
nignag [31]
The answer is x=5 or x=1/2.
8 0
3 years ago
Read 2 more answers
A set of numbers is shown below: {0, 0.6, 2, 4, 6} Which of the following shows all the numbers from the set that make the inequ
Lorico [155]
The given equality hold true when x = 2.

Put x = 2 in inequality.

2(2) + 3 = 4+3 = 7 = R.H.S.

For x = 4 and 6, L.H.S(2x+3) is greater than 7.

Hence for x = 2, 4 and 6, the above inequality holds true.

Hope this helps!
3 0
3 years ago
Read 2 more answers
Need help with this question ​
Hatshy [7]

Answer:

1. He added 5 instead of subtracted 5.

2. He should have subtracted 5.

3. 2 2/3

Step-by-step explanation:

3x+5=13

subtract 5 to both sides 3x=8

divide both sides by 3 x=8/3 or 2 2/3

8 0
2 years ago
Read 2 more answers
A cooler contains 7 cans of​ soda; 2 ​colas, 4 ​orange, and 1 cherry. Two cans are selected at random without replacement. Find
Mazyrski [523]
The probability is 2/14
7 0
3 years ago
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