Parallel Lines

Line [math]a[/math] and Line [math]b[/math] are parallel lines. They have the same slope. Move line [math]a[/math]. The slope for line a stays the same as line [math]b[/math]'s. [math]y=mx+b[/math] is the slope-intercept form of a linear equation. The slope is [math]m[/math].