Answer:
A. Not a function
B. function
C. function
D. not a function
Step-by-step explanation:
A is not a function because it has more than one of the same input ( x value)
B is a function because it does NOT have more than one of the same input (x value)
C is a function because it does NOT have more than one of the same input (x value)
D is not a function because it has more than one of the same input ( x value)
Hope this helps.
6x² - 20x + 6
Step-by-step explanation:
Sarah's 10 years old.
Antonio's 2 years old.
2 x 2 = 4
10 x 3 = 30
4 + 30 = 34
2 x 5 = 10
If A is the buying value & B the selling value, then the increase =
Increase = (B-A)/A = (1.15 - 0.87)/0.87 = 0.3218 or 31.18%
Answer:
A) (-5, -34)
Step-by-step explanation:
f(x) = x^2 + 10x - 9
We complete the square to get the equation in vertex form
Take the coefficient of the x term and divide by 2 then square it. We add it and then subtract it not to change the value of the equation
f(x) = x^2 + 10x +(10/2)^2 - (10/2)^2 - 9
f(x) = x^2 +10x +25 -25 -9
f(x) = (x^2 +10x +25) -34
The term in parentheses simplified to (x+10/2) ^2
= (x+5)^2 -34
= (x - -5)^2 -34
This is in the form (x-h)^2 +k
The vertex is (h,k) h=-5 and k=-34
(-5,-34)
