A school has two types of tables: round tables with 6 seats each and rectangular tables with 8 seats each. For a fundraising event, they filled the gym with 25 tables, for a total of 190 seats.
a. Write and solve a system of equations to determine how many round tables, x, and how many rectangular tables, y, were used for the fundraising event. Note: use either the substitution method OR elimination method to solve the system.
b. Check your answer by substituting your obtained values into BOTH of your equations.
c. Verify your answer graphically by finding the intersection of your two linear equations using Desmos.