Simultaneous equations like đť’š = 2đť’™ - 1 and đť’š = đť’™ + 1 can be represented graphically. To solve the equations graphically, the two lines đť’š = đť’™ + 1 and đť’š = 2đť’™ - 1 are drawn on the same diagram.
Everyone learns (and some readers maybe still remember) the quadratic formula. It’s a pillar of algebra and allows you to solve equations like Ax 2 +Bx+C=0. But just because you’ve used it doesn’t ...