Developing a Formula: Setting Up and Solving an Equation in Two Unknowns (VCE SSCE General Mathematics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does substitution mean when working with formulas?
What does substitution mean when working with formulas?
Replacing variables with actual numbers
What is the general form for cost problems with two variables?
What is the general form for cost problems with two variables?
What is the first step when working with two unknowns?
What is the first step when working with two unknowns?
Build an expression for 1st variable
If one item costs 2 USD, what expression shows the cost of items?
If one item costs 2 USD, what expression shows the cost of items?
dollars
After building expressions for both variables, what should you do?
After building expressions for both variables, what should you do?
Add the two expressions together
How can you check if your formula makes sense?
How can you check if your formula makes sense?
If and , cost should be zero
How do you write 75 cents in dollar form?
How do you write 75 cents in dollar form?
0.75 USD
To how many decimal places should money answers be expressed?
To how many decimal places should money answers be expressed?
Two decimal places
Using , find when and .
Using , find when and .
33.6 USD
What do the variables in a formula represent?
What do the variables in a formula represent?
What varies in the problem