Question 690256
3x+12y= -6 
solve for y
12y = -3x - 6
y = {{{(-3/12)x - 6/12}}}
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y = {{{(-1/4)x - 1/2}}}
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slope is {{{-1/4}}}, a perpendicular line will have a slope of negative inverse.
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A perpendicular line will have a slope of 4
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6y = ax+9
y = {{{(a/6)x + 9/6}}}
{{{a/6 = 4}}} ==> multiply both sides by 6
a = 24
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{{{highlight_green(Choice_B)}}}
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