Algebra 1B Sample Work Unit 4 M. Ward 2016-2017 You must show all work and /or explain your answers to receive full credit. No exceptions! It is recommended that you print and write out your answers. Scan/take a photo and upload to the dropbox in Unit 4, Lesson 9. (You may use extra paper as needed - make sure it is uploaded as well.] COMPLETE SAMPLE WORK BEFORE YOU TAKE THE UNIT ASSESSMENT! 1. Describe how the graph of y = -x2+ 1 differs from 2. Graph the quadratic equation y = x2 + x - 2. y = x'. Then find the axis of symmetry and the Identify the axis of symmetry and the vertex. vertex. 3. A ball is thrown from the top of a 50-ft building 4. Solve the quadratic equation 3x- = 27 with an upward velocity of 24 ft/s. When will it reach its maximum height? How far above the ground will it be? 5. Solve the quadratic equation 2x - 4x + 1 = 0 6. How many solutions are in the equation 3x2 + 4x -7 = 0? 7. Solve by completing the square: A rectangular patio | 8. Find the radius of a circular lid with an area of has a length of x + 6 m, a width of x + 8 m, and a 12in. total area of 400 ma. Find the dimensions to the nearest tenth. 9. Solve the system of equations. 10. Solve the system of equations. v=x+9 ) = 4x + 8 y = 6x x2 + 7x - 20