Your goal is to take the blue triangle and drag A'', B'', and C'' so that it matches the reflection of the pre-image of triangle with vertices A, B, and C. When you think you have the correct reflection of the image, check "Check Answer" and you will be able to see if you have correctly moved the vertices.
1) Write the rule that maps A --> A" 2) Write the rule that maps B --> B" 3) Write the rule that maps C --> C" 4) Write the general rule for reflecting over the x-axis