Answer :
Answer:
f(x) = (x + 1)² - 9
vertex: (-1, -9)
domain: all real numbers
range: y ≥ -9
Step-by-step explanation:
y = x² + 2x - 8
convert by 'completing the square' method
x² + 2x + 1 = 8 + 1
(x + 1)² = 9
f(x) = (x + 1)² - 9
Answer:
f(x) = (x + 1)² - 9
vertex: (-1, -9)
domain: all real numbers
range: y ≥ -9
Step-by-step explanation:
y = x² + 2x - 8
convert by 'completing the square' method
x² + 2x + 1 = 8 + 1
(x + 1)² = 9
f(x) = (x + 1)² - 9