Question

The center of an ice rink is located at (0, 0) on a coordinate system measured in feet. Sandi skates along a path that can be modeled by the equation
y = 0.08x2 - 1.6x + 13.

David starts at (20, 13) and skates along a path that can be modeled by a quadratic function with a vertex at (10, 5).

Which system of equations models the paths of the two skaters?

y = 0.08x2-1.6x+13 and y = 0.08(x-10)2+5

y = 0.08x2-1.6x+13 and y = 1.6(x-10)2+5

y = 0.08x2-1.6x+13 and y = 0.8(x-10)2+5

Answer 1

can you write the second equation ?
y = a(x-h)^2 + k
vertex at (h,k)
h = -b/2a and k = f(h)
passes through (20, 13)