Answer:
Direct Variation
Step-by-step explanation:
Given: A car travels at a distance of km. The formula that relates
to
is
To find: kind of variation
Solution:
The formula that relates to
is
Here, is a constant of proportionality.
Constant of proportionality is also called as constant of variation.
varies directly as
.
Therefore, this is a direct variation.
Isabel can drive 505.85 miles with a gas tank that holds 15.1 gallons of gas
<em><u>Solution:</u></em>
Given that, Isabel’s car gets 33.5 miles per gallon
Her gas tank holds 15.1 gallons of gas
To find: Number of miles can Isabel drive on a full tank of gas
Let "x" be the miles drive with 15.1 gallons of gas
From given,
1 gallon = 33.5 miles
15.1 gallon = x miles
This forms a proportion and we can solve the sum by cross multiplying
Thus Isabel can drive 505.85 miles on a full tank of gas