Question

using the graph below, how are the usual dosage and maximum dosage related?
weights vs. drug doses
the maximum and usual dosages start at the same mg.
the lines have similar slopes, so an increase in weight does not affect the usual or maximum dosages.
as the weight goes up, the maximum dosage increases at a faster rate
as the weight goes up, the maximum dosage decreases at a faster rate

Explanation:

Step1: Analyze starting - point

The usual dosage line starts around 40 mg and the maximum - dosage line starts around 60 mg, so they don't start at the same mg.

Step2: Analyze slopes

The slope of a line in a dosage - weight graph represents the rate of change of dosage with respect to weight. The maximum - dosage line has a steeper slope than the usual - dosage line. A steeper slope means that for the same increase in weight, the maximum dosage increases more than the usual dosage.

Answer:

As the weight goes up, the maximum dosage increases at a faster rate.