This FREE interactive slope mini-app helps students visually understand how changing the b-value affects a line. Students compare lines such as y = x, y = x + 2, and y = x - 3. They see that changing the constant moves the line up or down without changing the steepness. This activity is designed for Algebra 1 students who need to see slope and linear relationships visually, not just memorize rules. Students can open the activity in a browser, work through the questions, and get immediate feedbac