The variation from x to y is an illustration of a direct variation
The value of x when y = 2 is -19/7
<h3>How to determine the value of x?</h3>
The variation is a direct variation.
So, we have:
x = ky
Where k represents the constant of variation
Make k the subject
k = x/y
This gives
x1/y1 = x2/y2
So, we have:
-19/14 = x/2
Multiply both sides by 2
x = -19/14 * 2
Evaluate
x = -19/7
Hence, the value of x when y = 2 is -19/7
Read more about direct variation at:
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Answer: $196.88
Step-by-step explanation:
It is given that the rate of 1 US dollar = 0.64 euros.
Then, 1 euro = 
⇒ 1 euro =1.5625 dollars
Now, 126 euros = 

Hence, If we exchange 126 euros on that day, then we would receive 196.88 dollars.
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Answer:
Step-by-step explanation:
The plan 1 cost for x rides will be ...
y = 6 + 3.50x
The plan 2 cost for x rides will be ...
y = 12 + 1.50x
These costs will be equal when ...
y = y
6 + 3.50x = 12 + 1.50x . . . . . substitute for y
2.00x = 6 . . . . . . . . . . . . . subtract 6+1.50x
x = 3 . . . . . . . . . . . . . . . divide by 2
For 3 rides, the cost will be the same.
__
For 3 rides the cost is ...
y = 6 + 3.50(3) = 6 + 10.50 = 16.50
The cost for 3 rides will be $16.50 for either plan.