When two lines meet, something interesting happens
One equation gives you a line — infinite points that all work. But what if you need a point that works for two equations at the same time? Now you're looking for where two lines cross.
In this lesson, you'll solve three different systems by finding crossing points on the graph. Each time, you'll check your answer by plugging it back in. Then comes the twist: what happens when two lines have the same slope? They never meet — and the system has no solution.
By the end, you'll understand the three possible outcomes: one solution (lines cross), no solution (parallel), or infinitely many (same line). All discovered visually, step by step.