Which is equivalent to 64^1/4?

Rational exponents work like this:

So, the numerator works as a usual power, while the denominator represents the order of the root.

So, raising to the power 1/4 means to extract the fourth root of a number:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.