Simplify the following expression completely using distribution and combining like terms 9+5(4x-4)
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Use the distributive property to multiply 5 by 4x-4.

Subtract 20 from 9 to get -11.

Putting it in standard form...(positive number in the 1st)

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c