Answer :
First, you gotta distribute the -4 to x-2,
y+6=-4(X-2)
y+6=-4x+8
Then, subtract both sides by 6,
y+6-6=-4x+8-6
y=-4x+2
Done
y+6=-4(X-2)
y+6=-4x+8
Then, subtract both sides by 6,
y+6-6=-4x+8-6
y=-4x+2
Done