It would be the first one (x,-y) because say for example you take the point of v1 (4,-1) and reflect across x axis you get (4,1) for v
It’s false because if you take a negative number away from another negative number it would give you another negative number not a positive number!
Sally paints at a rate of 1/7th room / hour
Steve paints at a rate of 1/6th room / hour
If they both painted together, they would paint 1/7 + 1/6 = 13/42 room/hour
so to paint the whole room, it would take 1/(13/42) = 42/13 =
<u>
3.23 hours (3 significant figures)</u>
Ok. So first plug in the X.
8[1/8(4)] + 6(4)
Then do the work
8(1/2) + 24
4+24
28
The answer is 28
