Which algebraic expression is a polynomial?

answers-

4x^2 – 3x + 2 over x

–6x^3 + x^2 – the square root of 5

8x^2 + the square root of x

–2x^4 + 3 over 2x

b. x + 1

step-by-step explanation:

i'am smart

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)