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Section 4 Vocabulary

Name: ___________________________________
Date: ________________________ Period: ______
Across
We can also use the quadratic formula to solve ____-world problems.
The Quadratic _______ states: x = (-b ± √[b² - 4ac])/2a
Looking at a graph of a quadratic function, the y-value of the x-intercept represents how much time it takes for the object to hit the ______.
In the complex number a + bi, a and b are ____ numbers and i is the imaginary unit that satisfies the equation i² = -1.
Looking at a graph of a quadratic function, the y-value of the axis of ________ x = a represents the x-value of the vertex.
The second step in solving a quadratic equation by __________ the square is to divide every term by a if a does not equal 1.
A(n) ________ is an expression with two terms.
The _____________ force of the earth is -16 ft/s² or -4.9 m/s².
Looking at a graph of a quadratic function, the initial height is represented by the y-_________.
A(n) _______ number is a number that can be expressed in the form a + bi.
In the quadratic equation f(x) = ax² + bx + c, the 'c' represents the initial ______.
The ______ root of a number, n, is the number that gives n when multiplied by itself.
Down
In order to factor a quadratic equation using the 'A-C' Method, your equation must first be set equal to ____.
A(n) _________ equation is used for a free-falling body where any effects of air resistance are ignored and the coefficient for the _________ term is constant based on the gravitational force of the earth, -16 ft/s² or -4.9 m/s².
The rate of change of a(n) ______ function is always the same; it's constant.
The first step in factoring a quadratic is to look for a ________ Common Factor, or GCF.
Three other names for the x-intercepts of a quadratic function are: zeros, _____, and solutions.
The _________ number has been defined as i = √(-1).
A(n) __________ of two squares is in the form a² - b² and factors to (a + b)(a - b).
A(n) _________ is an expression with three terms.
In the quadratic equation f(x) = ax² + bx + c, the 'b' represents the initial ________.
A(n) _______ square trinomial is in the form a² + 2ab + b² or a² - 2ab + b² and factors to either (a + b)² or (a - b)² depending on the sign of the middle term (2ab).
Looking at a graph of a quadratic function, the y-value of the ______ represents the maximum height the object reaches, while the x-value of the ______ represents the time it takes to reach that maximum height.