SOLUTION: The line h contains the points (6,-2) and (-4,10). The equation of the line k is ax+6y+12=0 and k is perpendicular to h. Find the value of the real number a. Please help..

Question 824810: The line h contains the points (6,-2) and (-4,10). The equation of the line k is ax+6y+12=0 and k is perpendicular to h. Find the value of the real number a. Please help..
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
The line h has the slope .

The line, k, is also 6y=-ax-12,
---------line k.

Line h perpendicular to line k means that .
The typically stated rule for this is, if two perpendicular lines in a plane have slopes and , then .
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