2x2 + 3x4 - 3x
3x4 + 2x2 - 3x
3x2 + 5x - 3
3x2 + 5x - 3
2a (-2a - 3)
-4a2 - 6a
The temperature and amount of ice cream sales
Positive correlation
(2,4) & (-5,7)
y = 3/-7 x + 34/7
9x2 - 4x3 + 2
-4x3 + 9x2 + 2
7x2 - 12x + 10
7x2 - 12x + 10
5x (5x2 + 3)
25x3 + 15x
Student with many absences and grades
Negative correlation
(0,6) & (-4,-3)
y = -9/4 x + 6
4x6 - 9x4 + 10x6 + 11x3
14x6 - 9x4 + 11x3
(2x2 + 3x + 2)+(3x2 - 5 - 1)
5x2 - 2x + 1
8x(2x2 + 3x - 9)
16x3 + 24x2 - 72x
Shoe size and salary
No correlation
(9,-2) & (3,1)
9x11 + 12x5 - 4x5 + 6x
9x11 + 8x5 + 6x
(-6x2 + 2x - 5)+(8x2 - 9 + 1)
2x2 - 7x - 4
(7x2 + 8x + 2)(8x2 + 6x + 5)
56x4 + 106x3 + 99x2 + 52x + 10
Height and exam scores
No correlation
(-5,5) & (6, -2)
y= -7/11 x + 20/11