1. f(x) = (x + 2)2 + 1
direction of opening:
vertex:
axis of symmetry:
y-intercept:
buddy point:
what is the direction of opening

1) Direction of opening: upward

2) Vertex is the point (-2,1)

3) Axis of Symmetry: x=-2

4) y-intercept: point (0,5)

5) Buddy point:  and  

Step-by-step explanation:

we have

This is the equation of a vertical parabola in vertex form

The general equation of a vertical parabola in vertex form is equal to

where

(h,k) is the vertex

a is the coefficient of variable x^2

If a > 0 -----> the parabola open upward and the vertex is a minimum

If a < 0 -----> the parabola open downward and the vertex is a maximum

The axis of symmetry is equal to the x-coordinate of the vertex

x=h

In this problem we have

The vertex is the point (-2,1)

The coefficient a is equal to a=1

so

a> 0

the parabola open upward and the vertex is a minimum

The axis of symmetry is

x=-2

Find out the y-intercept

Remember that the y-intercept is the value of y when the value of x is equal to zero

For x=0

The y-intercept is the point (0,5)

Find the x-intercepts

Remember that the x-intercept is the value of x when the value of y is equal to zero

so

For f(x)=0

The roots are complex

take square root both sides

Remember that

The solutions are

therefore

1) Direction of opening: upward

2) Vertex is the point (-2,1)

3) Axis of Symmetry: x=-2

4) y-intercept: point (0,5)

5) Buddy point:  and  

linear

step-by-step explanation:

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half