Answer:
x=1
Explanation:
1. Complete the square on the right side of the equation.
5 ( x − 1 )2 − 18
2. Use the vertex form, y = a ( x − h ) 2 + k , to determine the values of a , h , and k . a= 5 h = 1 k = − 18
3. Since the value of a is positive, the parabola opens up.
Opens Up
4. Find the vertex ( h , k ) . ( 1 , − 18 )
5. Find p , the distance from the vertex to the focus.
1 /20
6. Find the focus.
7. ( 1 , − 359/ 20 )
8. Find the axis of symmetry by finding the line that passes through the vertex and the focus.
ANSWER: x = 1