Back to the on-screen lesson · Print

Use quadratic structure, functions and coordinates: retrieval

Use quadratic structure, functions and coordinates: retrieval: a separate sample with explanations after your response.

Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.

1. What you will learn

Use quadratic structure, functions and coordinates: retrieval: attempt the functions quadratics sample without worked examples. Use the target of each question to decide which information matters, and record your initial response before reading its explanation.

2. Practice

Let f(x)=2x+1 for x<0 and f(x)=x squared for x>=0. What is f(-3)+f(2)?

• -1
• -2
• -1/2
• 0
• 1

3. Practice

The function g(x)=sqrt(10-2x) has real values only when x is at most what number?

• 5
• 10
• 5/2
• 6
• 4

4. Practice

What is the distance between the points (-2,3) and (4,11)?

• 10
• 20
• 5
• 11
• 9

5. Practice

A circle has equation (x-2) squared+(y+3) squared=25. What is its diameter?

• 10
• 20
• 5
• 11
• 9

6. What you can do now

Review the functions quadratics decisions in this algebra sample. Identify the particular restriction or evidence that changed your answer, and return to the corresponding worked lesson before trying a new case.