- A
- B
- C
- D
Step-by-Step Solution
The per-km rate multiplies the distance and the fixed charge is added once: . Check a 3 km ride: Rs 56.
Answer: D)
An auto charges a fixed Rs 20 plus Rs 12 for every kilometre travelled. If a ride of km costs Rs , the equation is:
Class 9Linear Equations in Two VariablesLinear Equations
Key idea: Graphing a linear equation
Three steps:
1. Find at least **two solutions** (preferably the and intercepts — easiest to plot).
2. Plot those points on the coordinate plane.
3. Draw a straight line through them.
Every linear equation in two variables graphs as a STRAIGHT LINE. (That's why they're called 'linear'.)
For accuracy: find a third solution and verify it lies on the line — catches arithmetic mistakes.
1. Find at least **two solutions** (preferably the and intercepts — easiest to plot).
2. Plot those points on the coordinate plane.
3. Draw a straight line through them.
Every linear equation in two variables graphs as a STRAIGHT LINE. (That's why they're called 'linear'.)
For accuracy: find a third solution and verify it lies on the line — catches arithmetic mistakes.
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Linear Equations in Two Variables practice questions
More Class 9 Linear Equations in Two Variables practice
Two students each find a DIFFERENT solution of 3x + y = 9 and plot their points. Which…The lines x = 2 and y = 2 are drawn on the same graph paper. Which statement is true?Which point lies on the line 2x + 3y = 0?The graph of 2x − y = 6 meets the two axes at which points?Both (2, −1) and (a, 3) lie on the line x + 2y = 0. Find a.