Worksheets › Class 9 › Introduction to Linear Polynomials
Class 9 Introduction to Linear Polynomials worksheet
CBSE Mathematics. Values and zeros of ax + b, straight-line graphs, slope and intercepts, linear models. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
If p(x) = −6x, then p(2) is:
- 12
- −4
- −13
- −12
Answer
(d) −12
−6 × 2 + 0
- 2.
The zero of 9x + 5 is:
- −5/9
- 5/9
- −1 4/5
- 5
Answer
(a) −5/9
9x + 5 = 0 → x = −5/9
- 3.
A linear polynomial has degree:
- 3
- 2
- 1
- 0
Answer
(c) 1
the highest power of x is 1
Section B · short answer
- 4.
Find the values of p(x) = −9x + 3 at x = −1, 1, 3. By how much does p(x) change each time x goes up by 1?
Answer
12, −6, −24; by −9
down by 9 each step
- 5.
Find the zero of −7x + 11 and check it.
Answer
1 4/7
−7x + 11 = 0 → −7x = −11 → x = 1 4/7
Section C · long answer
- 6.
Plan A costs Rs 83 plus Rs 8 per hour; plan B costs Rs 66 plus Rs 10 per hour. Write each as a linear polynomial. After how many hours do they cost the same, and which is cheaper for longer use?
Answer
A: 83 + 8h; B: 66 + 10h; equal at h = 8 1/2; A is cheaper after that
83 + 8h = 66 + 10h → 2h = 17
Fresh sheets for your child
In the app, every Introduction to Linear Polynomials sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.