Start by looking at the vertex form of a quadratic function, f(x) = a(x - h)^2 + k. The variables h and k are the values of the vertex. Plug those in to get f(x) = a(x - 4)^2 + 5. To find the variable a, plug in the point given for the x and y values. So, you get (21) = a((8) - 4)^2 + 5. Solve for a algebraically, and you get a = 1. Finally, plug everything in and simplify the equation. You should get that the quadratic function is f(x) = x^2 - 8x + 21. Hope this helps!
Answer:
20
pls mark brainliest if possible
Step-by-step explanation:
the range is the difference between the values of the largest and smallest values. You can figure this out with subtraction.
Largest number: 100
Smallest number: 80
Range: 20
Answer:
x is greater than -5
Step-by-step explanation:
<span>If MN = 3 and MN = AB, then AB = 3
</span>answer
Transitive Property