Ruhi plots the graph of the linear equation 2x + 3y - 8=0 on a graph paper. Then her teacher gave her three linear equations in two variables and asked her to pick up one and plot it. She does it on the same graph sheet to get two parallel lines. Which equation did she pick ? * -6x - 9y - 20 = 0
-6x - 9y + 24 = 0
-6x - 4y - 20 = 0
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