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What value of b will make 2x-3y equals 5 and 9y plus bx equals 4 parallel?
Wiki User
∙ 11y ago
2x - 3y = 5 => 3y = 2x - 5 has a gradient of 2/3
9y + bx = 4 => 9y = -bx + 4 has a gradient of -b/9
The two gradiends must be the same if the two lines are parallel:
2/3 = -b/9 so that b = -6
Wiki User
∙ 11y ago
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