§-Quick questions
NSWMaths Standard 2Year 12: Algebra
Quick questions on Quadratic models for HSC Maths Standard 2
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
when does it land?Show answer
The same shape fits money questions too, like the price that earns the most profit. So the work here is mostly about finding the top (or bottom) of the curve and where it touches the ground line. :::
What is finding the vertex?Show answer
The vertex (highest or lowest point) occurs at
What is zeros (where )?Show answer
Maths Standard 2 does not use the quadratic formula or the discriminant (a test for how many zeros there are). Those belong to Maths Advanced and Extension 1. If a model's quadratic does not factor cleanly, the question will give you the zeros on a graph or in a table, so you read them off rather than calculate them.
What is spotting a quadratic from a table?Show answer
A favourite exam task hands you a table and asks which model fits. The test for a quadratic is the second difference.
What is not substituting back for the maximum value?Show answer
Finding the -coordinate is half the job. The question usually wants the maximum or minimum , with units.
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.