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 h is .

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

Answer 1

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

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

$\text{Slope (m)}=\$\text{10 per h}$

$\text{Initial money for parking (b)}=\$20$

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

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

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