Int. 2 Chapter 4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The graph of a quadratic equation is a ______ | parabola
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| When a is positive, the parabola opens ____ | up
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| When a is negative, the parabola opens _____ | down
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| When a is positive, the vertex is a _________ | minimum
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| When a is negative, the vertex is a _________ | maximum
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| What is the standard equation for a parabola? | y = ax^2 + bx + c
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| c is the _________ | y -intercept
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| The line of symmetry always goes through the ____ | vertex
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| What is the formula for the line of symmetry? | x = -b/(2a)
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| To find the vertex, you... | find the line of symmetry, then plug that value into the equation.
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| Quadratic equation in transformation form: | y = a(x-h)^2 + k
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| Find the coordinates of the vertex: y = 3(x - 4)^2 + 1 | (4, 1)
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| What method would you use to solve 4x^2 - 7 = 21 | solve by undoing
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| What are the two methods used for factoring (in this class)? | double rainbow and box method
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| What is the zero product property? | if ab = 0, then either a = 0 or b = 0
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| What is the quadratic formula? | x = (-b +/- sqrt(b^2 - 4ac)) / (2a)
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| What is the formula for the discriminant? | b^2 - 4ac
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| How many solutions are there if the discriminant is positive? | 2 real solutions
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| How many solutions are there if the discriminant is zero? | 1 real solution
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| How many solutions are there if the discriminant is negative? | No Real solutions
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| i^2 = ______________ | -1
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| How is the graph of y = 2x^2 translated to produce the graph of y = 2(x - 5)^2 - 1 ? | Right 5 units, down 1 unit
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| How do you multiply two binomials? | Use the FOIL acronym to help you remember all four products.
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| How would you solve 3x^2 + 4x - 4 = 0? | Either quadratic formula or factoring
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| What does it mean if the discriminant is a perfect square? | It can be factored.
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| How can you study for this test? | Watch youtube videos. Re-do problems from quizzes and homework. Try a quadratics review game on the internet.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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