Identify the equation of a line in slope-interecept form that is perpendicular to y = -1/3x + 2 and passes through (2,1). I really need help and need the work shown.

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Which expression is not a polynomial?

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125