Boosting this so more people can see!!
Answer:
-11f +15
Step-by-step explanation:
-f-5(2f-3)
Distribute
-f -10f +15
Combine like terms
-11f +15
Answer:
-2
Step-by-step explanation:
they are parallel so same slope but different y intercepts

if you have already covered slopes, you could also get it that way, in fact is simpler that way.
Well not all lines are lines of symmerty, because if you draw a let's say a rectangle on a piece of paper and draw a diagonal line through it, well the two sides don't really lie perfectly on one another!!