Solving Equations (Junior Cert Mathematics): Quizzes

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Solving Linear Equations
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12 questions from this quiz

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What is the highest power of the variable in a linear equation?

11

Why is it called a 'linear' equation?

It forms a straight line on a graph

Which equation is NOT linear?

x2+y=5x^2 + y = 5

What operation undoes addition in an equation?

Subtraction

What operation undoes multiplication by 33?

Division by 33

What does 'letters to the left, numbers to the right' mean?

Get xx terms on left, numbers on right

In 5x+6=2x+95x + 6 = 2x + 9, which xx term should you eliminate first?

2x2x (the smaller one)

What is the first step when solving 4(x−2)=124(x - 2) = 12?

Expand the brackets

How do you remove fractions from 5x−24=2x+22\frac{5x-2}{4} = \frac{2x+2}{2}?

Multiply each side by opposite denominator

How do you check if your solution is correct?

Substitute value back into original equation

What happens when you check x=4x=4 in 3x+6=183x+6=18?

Both sides equal 1818

What must you always do to both sides of an equation?

Perform the same operation

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