How to find the slope of a line. y = mx + b

New 8th Grade Math STAAR TEK 8.4a use similar right triangles to develop an understanding that slope, m, given as the rate comparing the change in yvalues to the change in xvalues, (y2 y1) / (x2 x1), is the same for any to points (x1, y1) and (x2, y2) on the same line.

8th STAAR Math 9th STAAR Algebra