18-2: Use the first derivative test and the second derivative test to determine where each function is increasing, decreasing, concave up, and concave down.\[ y = \frac{8x + 7}{8x}, \, x \neq 0 \] **Question: Identifying Concavity Intervals**Select the correct choice below and, if necessary, fill in the answer box within your choice.**1. Determine the intervals of concavity upward:**- ◯ A. The function is concave up on ____. (Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Simplify your answer.)- ◯ B. The function is not concave up on any interval.**2. Determine the intervals of concavity downward:**- ◯ A. The function is concave down on ____. (Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Simplify your answer.)- ◯ B. The function is not concave down on any interval.

Name: 18-2: Use the first derivative test and the second derivative test to
Uploaded: 2024-03-20T07:06:41.000Z
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Description: 18-2: Use the first derivative test and the second derivative test to determine where each function is increasing, decreasing, concave up, and concave down.\[ y = \frac{8x + 7}{8x}, \, x \neq 0 \] **Question: Identifying Concavity Intervals**Select t