Complete the mapping of the vertices of ADEF.
D(2, -4) - DO
E(1, -1) - E
IF(5, 1) - F
What is the rule that describes a reflection across the
line y = x?
x= g(x, y) - 7
Done

b=9a+4

Step-by-step explanation: First you have to distribute -3(b-6) which gives you -3b+18. Then you have 27a-3b+18=6. Then you do 6-18 which gives you -12. Simplifying again you have 27a-3b=-12. Next, you have to subtract 27a from 27a-3b and it gives you -3b=-27a-12. Then divide -3 from both sides which then gives you b=9a+4