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tatiyna
3 years ago
13

I really don't understand number 10 please help

Mathematics
2 answers:
Artemon [7]3 years ago
8 0
For an ordered pair to satisfy a function , it's a must that when you plug x , you get the value of y and vise versa :

y = -6x - 2 

Check for pair ( -1,-8)

y = -6 * -1 -2 = 6 -2 = 4 

y after substitution is not equal to given y ( 8 )

so refused ordered pair.

Check for pair (-3, 16)

y = -6 * -3 -2 = 18 -2 = 16

CORRECT , so this satisfy the function

and so on.


REY [17]3 years ago
4 0
You would plug them in and see if they work. B  and D work
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Bob believes his test grade varies directly with the number of hours he spends studying and inversely with the number of hours h
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Answer: Hello mate!

A direct variation implies that, if y is the dependent variable that varies with the variable x; then: y = k*x where k is a real number.

An inverse variation has the form y = k/x where also k is a real number.

them, if we define s as the hours that Bob spends studying, and b as the hours that he spends playing baseball, then the equation that represents the score is:

Score(s,b) = k*s/b

we know that if s = 6, and b = 7, then the score is 72; with this information, we could obtain the value of the constant k.

score(6,7) = 72 =k*6/7 = k*

then  k = 72*(7/6) = 61.7

now if s = 4 and b = 6, the score that he should expect is:

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2 years ago
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RoseWind [281]

Answer:

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3 years ago
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IgorLugansk [536]
Initial cost = $126
Final cost = $150
Then
Amount of change = (150 - 126) dollars
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Step-by-step explanation:

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