Determine whether the inverse of F(x) is a function

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle