Question

Joevina threw a football. The height of the ball, h, in metres, can be modelled by h=-1.6x² + 8x, where x is the horizontal distance from where she threw the ball.. a. Complete the square to write the relation in vertex form. b. How far did Joanne throw the ball? [4] Paragraph V BI U A 叩く描く + v *** X Lato (Recom... V 19px.... EQ L [4] 78 0⁰ DC

Answer 1

Explanation:

h = -1.6x^2 + 8x

h = -1.6(x^2 - 5)

h = -1.6[(x - 2.5)^2 - 6.25]

h = -1.6(x - 2.5)^2 + 10 <-------- Vertex form.

Joanne threw the ball 2.5 metres.