I’m pretty sure you already know you forgot the photo lol
Answer: c
Step-by-step explanation:
i thinks thats right
Answer:
![x^2 -5x-14=0](https://tex.z-dn.net/?f=x%5E2%20-5x-14%3D0)
Step-by-step explanation:
![\text{Given that, the roots are}~ \alpha = -2~ \text{and}~ \beta = 7.\\\\\text{The quadratic equation with roots}~ \alpha~ \text{and}~ \beta ~ \text{is,} \\\\~~~~~~~x^2 - \left(\alpha + \beta \right)x + \alpha \beta =0 \\\\\implies x^2 -(-2+7)x + (-2)(7) = 0\\\\\implies x^2 -5x-14=0](https://tex.z-dn.net/?f=%5Ctext%7BGiven%20that%2C%20the%20roots%20are%7D~%20%5Calpha%20%3D%20-2~%20%5Ctext%7Band%7D~%20%5Cbeta%20%3D%207.%5C%5C%5C%5C%5Ctext%7BThe%20quadratic%20equation%20with%20roots%7D~%20%5Calpha~%20%5Ctext%7Band%7D~%20%5Cbeta%20~%20%5Ctext%7Bis%2C%7D%20%5C%5C%5C%5C~~~~~~~x%5E2%20-%20%5Cleft%28%5Calpha%20%2B%20%5Cbeta%20%5Cright%29x%20%2B%20%5Calpha%20%5Cbeta%20%3D0%20%5C%5C%5C%5C%5Cimplies%20x%5E2%20-%28-2%2B7%29x%20%2B%20%28-2%29%287%29%20%20%3D%200%5C%5C%5C%5C%5Cimplies%20x%5E2%20-5x-14%3D0)
Answer:
5
Step-by-step explanation:
Answer:
1. figure 4 ; 2. figure 1; 3. figure 3 .
Step-by-step explanation:
1. The correlation coefficient is closest to 1 for the data-set relating to figure 4.
2. The least evidence of a linear relationship is shown by the data-set relating to figure 1.
3.The correlation coefficient r appear to be equal to -1 for the data-set relating to figure 3.
We know that as more the modulus of the correlation coefficient (r) approaches 1, more the figure related to the data-set starts to resemble a straight-line.
The line of linear regression takes a positive slope for a positive value of r and takes a negative slope for a negative value of r.
Moreover, more the modulus of r approaches 0, more there is absence of linearity in the scatter plot.