Quadratic Graphs
The degree of a quadratic function
What is 2?
The value of "a" for a graph of a quadratic function opening downward.
What is negative?
The coordinates of the y-intercept for the quadratic function y=-2x2 - 7 + 5x
What is (0,-7)?
The "b" of the quadratic function y=2x2 + 5
What is zero?
Find two consecutive odd integers whose product is 99.
What are 9 & 11 AND -11 and -9?
*Must have both to receive points!*
The shape of the graph of a quadratic function.
What is a parabola?
The vertex of the quadratic function y = 5x2 + 10x - 2 is a ____________________ point.
What is minimum?
The general form of a quadratic function can be expressed as ____________________.
What is y=ax2 + bx + c?
y= 1 - 2x2 + 3x
What is a=-2, b=3 and c=1?
A certain number added to its square is 30. Find the number(s).
What are -6 and 5?
*Must have both to receive points!*
The name of the line that divides a quadratic function exactly in half.
What is the axis of symmetry?
Order the following quadratic functions from narrowest to widest:
y=4x2 y=-12x2 y=11x2 y=-2x2
What is y=-12x2, y=11x2, y=4x2, y=-2x2?
The axis of symmetry can be determine by using the equation ____________________.
What is x = -b/2a
The coordinates of the y-intercept for the quadratic function y=3x2 + 2x
What is (0,0)?
Find two consecutive positive integers such that the square of the first decreased by 17 equals 4 times the second.
What are 7 and 8?
The point on a quadratic function that will be the maximum or minimum of the function.
What is the vertex?
Order the following quadratic functions from widest to narrowest:
y=4x2 y=2/3 x2 y=-2x2 y=-2/5 x2
What is y=-2/5 x2, y=2/3 x2, y=-2x2, y=4x2
Find the axis of symmetry for the quadratic function y=x2 + 10x + 6
What is x = -5?
Find the axis of symmetry for the quadratic function y=2x2 + 6x + 4.
What is x = -3/2?
The altitude of a triangle is 5 less than its base. The area of the triangle is 42 square inches. Find its base and altitude.
What are: base = 12 inches and altitude = 7 inches?
The domain of the quadratic function y=x2
What is all real numbers?
If a quadratic function has a root at (-3,0) and a maximum at (2,5), then what is the other root?
What is x=7?
The coordinates of the vertex for the quadratic function y=x2 - 4x + 8 is ____________________.
What is (2,4)?
If the axis of symmetry is x = 1/2 for the quadratic function y=2x2 - 2x + 3, the coordinates of the vertex is ____________________.
What is (1/2, 5/2)?
The length of a rectangle is 5 inches more than twice a number. The width is 4 inches less than the same number. If the area of the rectangle is 15, find the number.
What is 5?