How would i solve and therefore graph sytems of equations?

My y intersect problems are y=x-1

And y-x-1

A man stores 72 liters of oil in 5 small cans and 2 large cans. If each large can hold twice as much as each small can, how many liters does each can hold?

Hugo lifted a total of 72 pounds in 9 attempts. Hugo lifted the same number of pounds in each attempt. how many pounds did he lift in each attempt?

Paul bought a student discount card for the bus. The card allows him to buy daily bus passes for $1.60. After one month, Paul bought 23 passes and spent a total of $42.80. How much did he spend on the student discount card?

How do I perform this operation (-2.1) + (3.26)

2 (3y+5) = 3 (5y+1/3) What is the solution of y

What is the gcf of 45, 18, and 39?

Marcos earned $300 mowing lawns this month of his earnings he plans to spend 18% repair in lawn equipment put 20% of savings and use 35% for canvas he will spend the rest how much will Marcos have left to spend

What's the number of 6,007,200

Lisa has $15 in her piggy bank. How much additional money does she need to buy a game that costs $75?

Nadia bought 5 tickets to attend a spaghetti supper fundraiser at her school. The equation 5x = 32.50 can be used to find x, the cost of each ticket in dollars. Which equation represent the cost of each ticket.