Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo
Algebra 1

7.12.6 Practice

Algebra 17.12.6 Practice

Search for key terms or text.

Complete the following questions to practice the skills you have learned in this lesson.

  1. Choose the quadratic equation that is represented by the graph.

  1. f ( x ) = x 2 + 7
  2. f ( x ) = x 2
  3. f ( x ) = x 2 3
  4. f ( x ) = x 2 + 5
  1. Choose the quadratic equation that is represented by the graph.

  1. f ( x ) = x 2 + 7
  2. f ( x ) = x 2
  3. f ( x ) = x 2 3
  4. f ( x ) = x 2 + 5
  1. Choose the quadratic equation that is represented by the graph.

  1. f ( x ) = x 2 + 7
  2. f ( x ) = x 2
  3. f ( x ) = x 2 3
  4. f ( x ) = x 2 + 5
  1. Choose the quadratic equation that is represented by the graph.

  1. f ( x ) = x 2 + 7
  2. f ( x ) = x 2
  3. f ( x ) = x 2 3
  4. f ( x ) = x 2 + 5
  1. The following two equations are equivalent.

factored form f ( x ) = ( x + 2 ) ( x + 3 )  
standard form f ( x ) = x 2 + 5 x + 6  

  1. Which equation helps find the x -intercepts most efficiently?
  1. standard form
  2. factored form
  1. Which equation helps find the y -intercept most efficiently?
  1. standard form
  2. factored form
  1. There are three equations represented on this graph:

f ( x ) = x 2 (black graph, at the top, opening upward)
f ( x ) = x 2 4
f ( x ) = x 2 + 5 ;

Use the graph to answer questions a and b.

  1. Which graph represents the equation f ( x ) = x 2 4 ?
  1. Blue graph (in the middle, opening upward)
  2. Green graph (at the bottom, opening downward)
  1. Which graph represents the equation f ( x ) = x 2 + 5 ?
  1. Blue graph (in the middle, opening upward)
  2. Green graph (at the bottom, opening downward)
  1. Select two equations whose graphs have a positive y -intercept.
  1. f ( x ) = x 2 + 3 x 2
  2. f ( x ) = x 2 10 x
  3. f ( x ) = ( x 1 ) 2
  4. f ( x ) = 5 x 2 3 x 5
  5. f ( x ) = ( x + 1 ) ( x + 2 )
  1. Which function represents the graph of f ( x ) = x 2 shifted 5 units to the right?
  1. f ( x ) = ( x 5 ) 2
  2. f ( x ) = ( x + 5 ) 2
  3. f ( x ) = x 2 5
  4. f ( x ) = x 2 + 5
  1. Select three equations whose graphs open downward.
  1. f ( x ) = ( 1 x ) 2
  2. f ( x ) = 1 x 2
  3. f ( x ) = ( x 1 ) 2
  4. f ( x ) = 1 + x 2
  5. f ( x ) = ( 1 x ) ( x + 2 )
  1. Which curve is the narrowest?
  1. f ( x ) = ( 1 3 x ) 2
  2. f ( x ) = 1 3 x 2
  3. f ( x ) = ( 3 x ) 2
  4. f ( x ) = 3 x 2
  1. Which equation is represented by the graph?

  1. f ( x ) = ( x + 4 ) 2 + 4
  2. f ( x ) = ( x 4 ) 2 + 4
  3. f ( x ) = ( x + 4 ) 2 + 4
  4. f ( x ) = ( x 4 ) 2 + 4
  1. Which equation is represented by the graph?

Graph on coordinate plane. Horizontal axis by twos from negative 8 to 8. Vertical axis by twos from negative 4 to 8. Graph goes through point 0 comma 7.

  1. f ( x ) = ( x + 3 ) 2 + 2
  2. f ( x ) = ( x + 2 ) 2 + 3
  3. f ( x ) = ( x 3 ) 2 + 2
  4. f ( x ) = ( x 2 ) 2 + 3

For questions 13 - 14, use the following graph. 

  1. Which of the graphs has been horizontally stretched? 
  1. Graph d
  2. Graph c
  3. Graph a
  4. Graph b
  1. Which function most closely represents the equation for graph c?
  1. f ( x ) = ( 1 4 x ) 2
  2. f ( x ) = ( x + 2.5 ) 2
  3. f ( x ) = ( 4 x ) 2
  4. f ( x ) = ( x 2.5 ) 2
Citation/Attribution

This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution-NonCommercial-ShareAlike License and you must attribute OpenStax.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:

    Access for free at https://openstax.org/books/algebra-1/pages/about-this-course

  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:

    Access for free at https://openstax.org/books/algebra-1/pages/about-this-course

Citation information

© May 21, 2025 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.