Change each equation to graphing form. Sketch the graph and label each vertex and axis of symmetry. Homework Help ✎
y = 2x2 + 7x – 7
y = 3x2 – x – 8
Add 7 to both sides to isolate the x-terms.
Factor out a 2 from the x-terms.
Complete the square. Remember to add to both sides.
Where is the vertex? Axis of symmetry?
See part (a).