A local farm raises horses and goats. • Let x represent the number of horses on the farm.
• The number of goats is 5 less than the number of horses.
• The total number of horses and goats on the farm is 21.
What is x, the number of horses on the farm?

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.