Checking the solution of simultaneous equations

Maths

Solving linear simultaneous equations algebraically

If x=2 and y=3, what is the value of 2x+3y?

Use substitution to decide which of the following are solutions to x+y=3.

Use substitution to decide which of the following is the solution to x+y=3 and 3x+4y=10.

Use substitution to decide which of the following is the solution to x+y=3 and 5y+3x=15.

Let p be the number of protractors bought. If each protractor costs £2, which of the following represents the total amount spent on protractors (in pounds)?

Let p be the cost of a protractor. If I buy 3 protractors, which of the following represents the total cost?

Let p be the number of protractors bought and q be the number of rulers bought. Protractors cost 20 pence and rulers cost 15 pence each. What does 15q represent?

Let p be the number of protractors bought and q be the number of rulers bought. Protractors cost 20 pence and rulers cost 15 pence each. What does p+q represent?

Let p be the number of protractors bought and q be the number of rulers bought. Protractors cost 20 pence and rulers cost 15 pence each. What does 20p+15q represent?

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