The two equations and are equivalent.

1. Which equation helps find the -intercepts most efficiently?
2. Which equation helps find the -intercept most efficiently?

Select all equations whose graphs have a -intercept with a positive -coordinate.

1. What are the -intercepts of the graph that represents ? Explain how you know.
2. What is the -coordinate of the vertex of the graph that represents ? Explain how you know.
3. Find the -coordinate of the vertex. Show your reasoning.
4. Sketch a graph of .

Determine the -intercepts, the vertex, and the -intercept of the graph of each equation.

Triangle has vertices at  and . Kiran calculates the point of intersection of the medians using the following steps:

1. Draw the triangle.
2. Calculate the midpoint of each side.
3. Draw the medians.
4. Write an equation for 2 of the medians.
5. Solve the system of equations.

Use Kiran’s method to calculate the point of intersection of the medians.