Question

₹20 is charged for parking initally and an additional charge of ₹10 is there for every hour.

The equation for total charge for x hours will be .

• A. $y=20x+10$
• B. $y=20x-10$
• C. $y=10x+20$
• D. $y=10x-20$

Answer 1

The correct option is C $y=10x+20$

$\text{Rate of charge for 1 additional hour}=₹10$

∴ Slope (m) = ₹10 per hour

Initial money for entering the parking lot (b) = ₹20

Equation of a straight line is written as: y = mx + b

Substituting the values of 'm' and 'b' in the equation, we get:

$y=mx+b$
$\Rightarrow y=10x+20$