Updated: Aug 27
This post explains and give practice opportunities related to TEKS 8.4A:
use similar right triangles to develop an understanding that slope, m, given as the rate comparing the change in y- values to the change in x- values, (y2 - y1 ) / (x2 - x1 ), is the same for any two points (x1 , y1 ) and (x2 , y2 ) on the same line
Students learn how slope remains the same for two similar right triangles that share a hypotenuse with a continuous line.
Between 2016 and 2021, this supporting standard has been tested 4 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click here. The videos below are linked to the questions in the quiz as answer explanations after the quiz is submitted.
To view all the posts in this 8th grade TEKS review series, click here.