Identify the x intercepts as well as vertex for a quadratic in standard form, y=x^2 -15

The video tutorial explains how to identify the vertex of a graph using vertex form, focusing on the H and K values. It covers graph transformations, detailing how H and K affect graph shifts. The tutorial also demonstrates finding solutions using an old equation method and solving for X using inverse operations and the square root method.

What is the role of the H value in the vertex form of a quadratic equation?

• It shifts the graph left or right.

• It reflects the graph over the x-axis.

• It shifts the graph up or down.

• It changes the width of the graph.

In the vertex form of a quadratic equation, if K is -15, what does it indicate?

• The graph shifts 15 units up.

• The graph shifts 15 units to the left.

• The graph shifts 15 units to the right.

• The graph shifts 15 units down.

How do you find the vertex using the formula -b/2a?

• By finding the square root of a.

• By multiplying a and b.

• By substituting the values of a and b into the formula.

• By adding a and b together.

What is the first step in solving the quadratic equation when y is set to zero?

• Add 15 to both sides.

• Subtract 15 from both sides.

• Multiply both sides by 15.

• Divide both sides by 15.

When using the square root method, why must both positive and negative roots be considered?

• Because the equation is exponential.

• Because the equation is linear.

• Because the equation is quadratic.

• Because the equation is cubic.