Question

11. Which of the following polynomial functions have a graph facing upward?

A y=-**+ 2x - x + 1
cy= x - x + x + 1
B. y = 5+ 6x + x2 + x
D. f(x) = 3x2 + x4 - 2x +3

(Explain please) ​

Answer 1

Firstly practice in paper it's graphics line is either concidents, parallel or intersecting..Prefer class ten NCERT BOOKS