Question

Which of the following is incorrect (a) the graph of linear equation is straight line (b) the graph of quadratic equation is parabola (c) the graph of cubic polynomial cut the X axis at maximum three points
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Answer 1

Answer:

Step-by-step explanation:

We observe that the graph y = f(x)  is a parabola opening upwards. Therefore,f(x) is a quadratic polynomial in which coefficient of x  

2

 is positive.  

(ii) We find that the graph y = g (x) is a straight line. So, g (x) is a linear polynomial.

(iii) Here, p (x) is neither linear nor quadratic.

(iv) Here, q(x) is a quadratic polynomial in which coefficient of x  

2

 is negative because the graph is a parabola opening downwards.