There it is in the image. Hope it helps. You don't need the negative y- axis.
Do 1.50 divided by 3 to get the unit price.

Since 5 is divisible by 10 and 5, we can factor out a 5 from both terms.
Total fruits→120=4u
apples=30=1u
3u=90→banana and oranges
banana→1u
oranges→2u
oranges=60