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C because the x coordinate cannot repeat in a function. One x coordinate can go into multiple y coordinates though.
Hope it helps
Answer:
No
Step-by-step explanation:
If they are a Pythagorean triple, then the square of the largest number will equal the sum of the squares of the other 2 numbers.
largest number = 9 and 9² = 81
6² + 8² = 36 + 64 = 100 ≠ 81
Thus 6, 8 and 9 are not a Pythagorean triple
Answer: K = 6
Step-by-step explanation:
If you find the inverse of the inverse function, it will return back to initial function.
The inverse of r^-1 (x) will give r(x).
To find the inverse of r^-1(x), let it be equal to y. Interchange y and x for each other and make y the subject of formula. That is,
Y = 2x^2 - 14
Interchange y for x
X = 2y^2 - 14
2y^2 = x + 14
Y^2 = x/2 + 14/2
Square both side
Y = sqrt ( x/2 + 7 )
It is only when K = 6, that will can get the value above.