Question: 1. Known line equations: x + 3y = 7 and 2x + 2y = 6. Determine whether the two lines are parallel. Cut each other

1. Known line equations: x + 3y = 7 and 2x + 2y = 6.

Determine whether the two lines are "parallel". "Cut each other" or "coincide". Give the explanation.

2. Sales of a DVD every week reach 28,000 copies when the price is Rp. 1600 per DVD. When the DVD price rose to Rp2000 per DVD sales only reached 12,000 copies every week. Determine the DVD sales demand function assuming the function is linear and graph it!

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