An automobile travels for 90 minutes along a highway. The graph shows the progress of the automobile, with its start point designated as distance=0 What is the automobile's average spoed as it travels from a distance of 5 km to a distance of 15 km along the highway?
O 1.5 km min
O 0.67 km min
O 0.5 km min
10 km min
b

f is prop to m1xm2 double m1 double force

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

snell's law

refractve index = sin incidence / sin refraction