This is due in a couple minutes could someone please help me?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Asap describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x)=-5.8sin x. g(x)=sin x. a: vertical stretch by a factor of 5.8, reflection across y-axis. b: vertical stretch by a factor of 5.8,reflection across x-axis. c: horizontal stretch by a factor of 5.8, reflection across x-axis. d: horizontal stretch by a factor of 5.8 reflection across y-axis.