Question

Case Study Based-4

Due to heavy strom, an electric wire got bent as shown in figure. It followed a mathematical shape.

Answer the following question.

X' 0 X

Y

Y'

–6 –5 –4 –3 –2 –1 1 2 3 4 5 6

1

2

3

4

5

6

–1

–2

–3

–4

–5

–6

(a) Name the shape in which wire is bent.

(i) Spiral (ii) Ellipse (iii) Linear (iv) Parabola

(b) How many zeros are there for the polynomial (shape of wire).

(i) 2 (ii) 3 (iii) 1 (iv) 0

(c) The zero's of polynomial are

(i) 0, 2 (ii) 2, 5 (iii) 5, 7 (iv) 2, 3

(d) What will be the expression for polynomial?

(i) x2

– 7x + 10 (ii) x2

– 3x – 10 (iii) x2

+ 7x + 10 (iv) x2

+ 3x – 10

(e) What is the value of polynomial at x = 3?

(i) –2 (ii) –10 (iii) 40 (iv) 8​

Answer 1

Answer:

(e) -2

(D)×2

(c)0,2

(B)IV

(a)spiral

Answer 2

answer

(iv) Parabola. _________