Question

Identify whether each line is linear, quadratic, or neither

y=7
y=3x^2+1/(2)x-x^3+1
y=2x+5x^2-1
y=x/(x-1)
y=(x^2+8x-20)/4
y=(x+5)(x-4)

Answer 1

y=7 is linear
y=3x^2+1/2x-x^3+1 is neither
y=2x+5x^2-1 is quadratic
y=x/(x-1) is neither
y=(x^2+8x-20)/4 is quadratic
y=(x+5)(x-4) is quadratic