Question

Help help. I’m confused

Answer 1

It can't be A, B, nor C because some of the equations wouldn't have a straight line if displayed in a graph.  For example A has a square root symbol and b and a have an exponent they would create a perebula where that would mean the equations would not make a straight line. However, Choice d doesn't have any exponents, or square root symbols meaning the equation could slope up or down in a STRAIGHT line in a graph.