2012 · Q37
Consider the following table: x: 0 1 2 3 4; y: 100 90 70 40 0. How are x and y related?
Elementary MathematicsAlgebra
- Ay = 100 - 10x
- By = 100 - 5x^2
- Cy = 20 - x - x^2
- Dy = 100 - 5x - 5x^2
Explanation
Only y = 100-5x-5x^2 fits all five pairs (100, 90, 70, 40, 0).