At a movie theater, the adult ticket price is $8 and the child ticket price is $6. for a certain movie, 210 tickets were sold and $1500 was collected. how many adult tickets were sold?

Given,
Adult Price(x) =8 $
Child Price(y) =6 $
So, 8x+6y=1500$ and also given 210 tickets were sold
So, x+y=210
By solving those two equations we get
No.of adult tickets sold = 120 & no.of child tickets =90

The coordinates of point a right now is (-3,-1) you have to multiply these coordinates by a factor of 2 to get (-6,-2)