Which is the algebraic expression is a polynomial with a degree of 2

Step-by-step explanation:

A polynomial is something off the form ax^n+bx^(n-1)+cx^(n-2)++x

so a 2nd degree polynomial is the one in which highest degree of the polynomial is 2 i-e, in above generalization n=2

so in single variable following are the polynomials of degree 2

an^2+bx+c

an^2+c in case b=0

an^2+bx, in case c=0

in double variable case following are the polynomials with degree 2

axy+bx+cy

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)