how do you know when a graph concave upwards just not getting it.

I think you need a real tutor. You are asking questions that are fundamental to understanding calculus.

I think so. but im at work and cant make it before the test.

To determine whether a graph is concave upwards (also known as convex), you need to analyze the graph's second derivative. Here's the step-by-step process:

1. Start with the original function f(x) of the graph. It represents the first derivative of the original function.

2. Take the derivative of f(x) to find the second derivative, denoted as f''(x).

3. Set up an inequality: f''(x) > 0.

4. Solve the inequality to find the x-values for which the second derivative is positive.

5. If the solutions to the inequality are valid (i.e., they belong to the domain of the original function), then the graph is concave upwards on those intervals.

To summarize, a graph is concave upwards where the second derivative is positive. The process of finding the concavity involves taking the second derivative and determining when it is greater than zero.