1. Write an equation of the line that passes through (0, -4) and is parallel y = (3/4)x + 2. Write the answer in slope-intercept form.
2. Solve the system of equations by substitution:
x + 2y = 9
3x - y = 13
3. Solve the system of equations by substitution:
4x - 3y = 1
12x - 9y = 3
Systems of equations are investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.