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Equations and Inequalities
Quick questions on Simultaneous linear equations explained: N(A)-Level Mathematics Equations and Inequalities
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are forming a pair from words?Show answer
Define two letters for the two unknowns, then write one equation for each piece of information. Two facts give two equations, which is exactly what you need.
What are sign slips when subtracting equations?Show answer
Subtracting means subtracting each term: . Forgetting the second sign is a frequent error.
What is not defining the unknowns in a word problem?Show answer
State clearly what each letter represents before forming the equations.
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