Last updated on Sep 20, 2026

Practice Problems (Junior Cert Mathematics): Quizzes

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What is the solution for $x$ and $y$ in Problem 1?

$x = 4$ , $y = -2$

What is the solution for $x$ and $y$ in Problem 2?

$x = 1$ , $y = 2$

What is the solution for $x$ and $y$ in Problem 3?

$x = 5$ , $y = -2$

In Problem 1, what is Equation B multiplied by to eliminate $y$ ?

$-3$

In Problem 2, what is Equation A multiplied by to eliminate $y$ ?

$4$

In Problem 3, what is Equation A multiplied by to eliminate $y$ ?

$2$

After eliminating $y$ in Problem 1, what equation results?

$-4x = -16$

After eliminating $y$ in Problem 2, what equation results?

$17x = 17$

After eliminating $y$ in Problem 3, what equation results?

$7x = 35$

In Problem 1, after substituting $x = 4$ into $2x - y = 10$ , what is the next step?

$8 - y = 10$

In Problem 2, after substituting $x = 1$ into $3x + y = 5$ , what is $y$ ?

$y = 2$

In Problem 3, which equation is multiplied to create Equation C?

Equation A

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