How to Solve Word Problems: Guessing and Checking
Guess and check means making a reasonable guess, testing it against every condition in the problem, and using how far off you were to make a better guess. For example, two numbers add to 20 and differ by 4. Try 10 and 10: the difference is 0, too small. Try 12 and 8: the sum […]
How to Graph Proportional Relationships and Find the Slope
TL;DR: A proportional relationship is the cleanest kind of linear pattern, written as y equals k times x, it always graphs as a straight line passing right through the origin. That constant k pulls double duty: it’s the constant of proportionality AND the slope of the line. So for y equals 3x, you get a […]
