What is the vertex of a function

Parabolas always have a lowest point (or a highest point, if the parabola is upside-down). This point, where the parabola changes direction, is called the "vertex". If the quadratic is written in the form y = a(x – h)2 + k, then the vertex is the point (h, k)

Step-by-step explanation:

This means that the vertex if going to be where the function goes it's higher and it lower

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

8 apples are left.

step-by-step explanation:

10-2=8

10 apples

take 2

now u have 8