How do we graph a straight line from its equation?
Line Treasure Hunt
How do we graph a straight line from its equation?
You're handed an equation — something like y = 2x + 1 — and somewhere out there lurks a straight line waiting to be drawn. The good news? That little equation is basically a treasure map. Follow its two clues and the line appears, exactly where it always was.
First, meet the playground where every line lives: the grid. Two number lines cross like a giant plus sign. The flat one is the x-axis, the standing-up one is the y-axis. Where they meet is home base, called the origin, the spot where both x and y are zero.
