The answer to the question is 3. $29.40
Answer:
x = -9
Step-by-step explanation:
6x + 6 = 3x – 21
Subtract 3x from each side
6x-3x + 6 = 3x-3x – 21
3x+6 = -21
Subtract 6 from each side
3x+6-6 = -21-6
3x = -27
Divide by 3
3x/3 = -27/3
x = -9
Perpendicular is when the slopes multiply to negative 1
remember
the slope of the line in form
ax+by=c is -a/b
find slopes
2x+ky=6
slope is -2/k
6x-4y=12
slope is -6/-4=3/2
so
-2/k times 3/2=-1
solve for k
-6/(2k)=-1
times both sides by 2k
-6=-2k
divide by -1
3=k
k has to be 3
