Question

Which equation best represents the graph above?

Oy=(x + 1)²-4
Oy=(x-1)²-4
Oy=(x + 1)²
Oy=(x-1)²

Answer 1

y=(x + 1)²-4

Explanation:

when y=0

(x+1)² - 4 = 0

(x+1)² = 4

x + 1 = ±√(4)

x + 1 = ±2

x = ±2 - 1

(+): x = 2-1 = 1

(-): x = -2-1= -3

roots are -3 and 1