A relation is a function when 2 or more of the domain are the same, if none are the same then it is a function.
I'm guessing x means the hypotenuse
Use Pythagoras
a^2 + b^2 = c^2
8^ + 15^2 =c^2
64 + 225 = c^2
289 = c^2
c = 17
x = 17
Answer:
sorrryyyy i didn't mean to answer!!!
Step-by-step explanation:
The y-value of the vertex is positive 3, as shown by the +3 on the right hand side of the equation, and the x-value is -1, from the (x+1)^2 (remember, when the number is inside the brackets, flip the sign) The vertex would be (-1, 3)
If you are looking for a rigorous answer (calculus), we must find the mininum point of the equation: f(x) = (x+1)^2 + 3 f
f'(x) = 2(x+1) = 2x + 2
2x + 2 = 0
x = -1
f(1) = (-1 + 1)^2 + 3
f(1) = 0 + 3 = 3
(-1, 3)
