## Knewton Challenge Discussion – GMAT Data Sufficiency (Graph Intersect)

This is a tricky Data Sufficiency question that over 50% of students miss. Can you tackle it? Try it out, then leave your answer in the comments. When you’re ready to see how you did, check out the video explanation from our GMAT teacher, Jess. If f(x) = ax² + bx + c, and a does not equal 0, at what point does the graph of the function f(x) intersect the y-axis? The graph of… Read more