Mathematical Models In a previous math class, you may have learned about the general form of a linear equation: y = mx + b, where m is the slope of the line and b is the y-intercept. You may have also learned that m is the ratio that measures how much y changes compared to an increase in x and that b is the place on the graph where the line crosses the y-axis. For questions 1 - 3 refer to the following: Consider the linear equation y = 3x + 100. The following is a table showing four ordered pairs in this linear equation. x y 0 100 1 103 2 106 3 109 the sentence: For this equation, the slope tells us that for every increase of Question Blank 1 of 2 choose your answer... unit in x, there is a Question Blank 2 of 2 choose your answer... unit increase in y