Chapter 2
Introduction to Linear Polynomials
CBSE Class 9
Mathematics Solutions
Educart Mathematics class Class 9 NCERT Exemplar cover
Question:

Identify other points on the line by completing the following table.                                                                   [Page No. 28]

xx 1 2 5 7 9 12 20
yy 3 15
Question image

Answer: Verified

Substitute each xx into y=2x+1y = 2x + 1:

xxy=2x+1y = 2x + 1
13
25
511
715
919
1225
2041

For example, x=9x = 9 gives y=2×9+1=19y = 2 \times 9 + 1 = 19, and x=20x = 20 gives y=41y = 41.
Every one of these (x,y)(x, y) pairs satisfies the equation, so each point lies exactly on the line.

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