Answer:
13
Step-by-step explanation:
solve for "a", once you get "a", plug it back into either equation to get "b"
Answer:
x, y, 4, 0
Step-by-step explanation:
To determine the inverse of the given function change f(x) to y switch <u><em>x</em></u> and y and solve for <u><em>y</em></u>.
f(x) = sqrt(x - 4)
y = sqrt(x - 4)
x = sqrt(y - 4)
x^2 = y - 4
x^2 + 4 = y
y = x^2 + 4
The domain of the inverse is the same as the range of the original function.
inverse f(x) = x^2 + 4
x^2 + 4 >= 4
x^2 >= 0
x >= 0
The resulting function can be written as inverse f(x) = x^4 + <u><em>4</em></u>, where x >= <u><em>0</em></u>.
I believe it is A. The reason is C has a strong negative correlation, indicating that the correlation coefficient would be negative.