PLZ HELP ME What is the quadratic regression equation for the data set?

yˆ=−0.175x2−3.786x+121.119

​yˆ=−0.175x2+3.786x−121.119​

​yˆ=−0.175x2+3.786x+121.119​

​ ​ ​yˆ=−0.175x2−3.786x−121.119​ ​ ​
x y
6 100
3 110
10 50
3 90
5 120
15 30
9 70

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Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.

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