Answer:
y = - x² + 1
Step-by-step explanation:
the equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k ) are the coordinates of the vertex and a is a multiplier
here (h, k ) = (0, 1 ) , then
y = a(x - 0)² + 1 = ax² + 1
to find a substitute any other point that lies on the graph into the equation
using (1, 0 ) , then
0 = a(1)² + 1 ( subtract 1 from both sides )
- 1 = a
y = - x² + 1 ← equation of graph
Answer:
- x² + 1
Step-by-step explanation:
the vertex of the graph is (0 , 1)
Then the equation of the graph has this form :
(x - 0)² + 1 or - (x - 0)² + 1
Since the parabola is opening down
Then
the equation of the graph is :
- (x - 0)² + 1 = - x² + 1
