Chapter 4 - Exponential and Logarithmic Functions - Section 4.8 Exponential Growth and Decay Models; Newton's Law; Logistic Growth and Decay Models - 4.8 Assess Your Understanding - Page 359: 31

Neither.

1. Identify the slope of $f(x)$ as $m_1=5$. 2. Identify the slope of $g(x)$ as $m_2=\frac{1}{5}$. 3. As $m_1\ne m_2$, the two lines are not parallel. 4. As $m_1\times m_2\ne -1$, the two lines are not perpendicular.