If 6x + 3x + 4 = 40, then x =

x = 4

Step-by-step explanation:

6x + 3x + 4 = 40

combine like terms to get

9x + 4 = 40

subtract 4 from both sides to get

9x = 36

divide both sides by 9 to get

x = 4

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