Mathematics - Functions - Linear - Slope and y-intercept - Slope Slider
Show a coordinate grid with a line y = mx + b. Two sliders: one for slope (m: -5 to 5) and one for y-intercept (b: -5 to 5). As student adjusts m, the line tilts. Positive m: line goes up left-to-right. Negative m: goes down. m=0: horizontal. m=1: 45 degrees. As b changes, the line shifts up/down bu