In algebra, we have studied the equation of a line. The equation of a line is y=mx+b. When you graph that equation, you get a straight line. A question to ask is, what does the b variable do? Well, the b variable in the equation represents the y-intercept of the line. Ever straight line has a y-intercept. When you change the y-intercept, you get a different thing.

    Another question is what does the m variable do? The m variable is the slope of the line. The slope would look like this, 3/4x. Every straight line has a slope. If you were to change the the slope of the line, the line would become steeper or lower. The points of the line would also change since you changed the the slope.