Question

The unit rate of the following graph is _____.

• A. 0.5 K/hour
• B. 0.75 K/hour
• C. 1.75 K/hour
• D. 1.5K/hour

Answer 1

The correct option is C 1.75 K/hour

You know,
$Slope=unitrate=\frac{changeiny}{changeinx}=\frac{y_2-y_1}{x_2-x_1}$

Consider the points as (1, 1.75) and (2, 3.5)


∴ Putting the values, you get:
$\Rightarrow Slope=\frac{changeiny}{changeinx}=\frac{3.5-1.75}{2-1}$

$\Rightarrow Slope=\frac{1.75}{1}=1.75$

So, the unit rate is 1.75 K/hour.