Factor Pairs
What 2 numbers have a sum of 7 and a product of 10?
2 and 5
What is the line that splits the parabola into 2 equal halves called?
The axis of symmetry.
List all the factors of this number.
6
1,2,3,6
What are the zeros of a quadratic equation?
The x intercepts. Where the parabola crosses the x axis.
22 divided by 2 equals?
What are the factor pairs of 12?
1 x 12
2 x 6
3 x 4
What coordinate does the axis of symmetry pass through?
The x coordinate.
List all the factors of this number.
16
1,2,4,8,16
What quadratic is formed from:
f(x) = (x + 9 (x - 2)
f(x) =x2 +7x - 18
42 divided by 3
Find the missing factor in the pair: (__, 6) where the product is 30
5 because
6 x ? = 30
or
30 / 6 = ?
How many solutions can a quadratic have?
No solution
One solution
or 2 solutions
List all the factors of this number.
21
1,3,7,21
What are the zeros (solutions) of
(6x + 3)(x - 4)
x = -1/2
x = 4
? divided by 3 = 7
21
What is the missing factor in the pair ____ and 15, with a product of 45?
3
Find the solutions to the following:
(x - 1/2) (2x+5)
x = 1/2 and x = - 5/2 or - 2.5
List all the factors of this number.
28
1,2,4,7,14,28
List all of the factors of 36.
1, 2, 3,4, 6, 9, 12, 18, 36
272 is divided by 4
68
Which of the following is a factor pair of 18: (2, 9), (3, 6), (4, 5), or (2,8)?
(2,9)
(3,6)
What are 2 numbers that have a product of 36 and a sum of -13?
Solution:
-9 and -4
List all the factors of this number.
32
1,2,4,8,16,32
Do you remember how the kid (mathematician) discovered the Cartesian coordinate plane (the graph) that we use?
He saw a fly on the ceiling and he wanted to describe its location and he created the coordinate system that we use today.
His name was Rene Descartes.
What is the formula to find the x coordinate and axis of symmetry from a quadratic in standard form??
x =-b/2a