Parallel line equation

Lessons

1. Given the graph of linear equation, find the slope of parallel line equation.
   
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2. The lines 2y - 6x - 4 = 0 and 6y - cx = 0 are parallel. Find "c".
   
3. Determine the equation of a line that is parallel to the line y = 4x - 1, and passes through the point (2, - 4). Answer in slope intercept form and general form.
   
4. Determine the equation of a line that is parallel to the line 3y - 9x - 3 = 0, and has the same x-int as the line 5y - 9x + 20 = 0. Answer in slope intercept form and general form.