Alisa L.

In Exercises 7 - 10, determine whether each ordered pair is a solution of the system of equations

$ \left\{\begin{array}{l}4x^2 + y = 3\\-x - y = 11\end{array}\right. $

(a) $ (2 , -13) $
(b) $ (2 , -9) $
(c) $ (- \dfrac{3}{2} , - \dfrac{31}{3}) $
(d) $ (- \dfrac{7}{4} , - \dfrac{37}{4}) $

In Exercises 7 - 10, determine whether each ordered pair is a solution of the system of equations

$ \left\{\begin{array}{l}- \log x + 3 = y\\-\dfrac{1}{9}x + y = \dfrac{28}{9}\end{array}\right. $

(a) $ (9 , \dfrac{37}{9}) $
(b) $ (10 , 2) $
(c) $ (1 , 3) $
(d) $ (2 , 4) $

In Exercises 11 - 20, solve the system by the method of substitution. Check your solution(s) graphically.

$ \left\{\begin{array}{l}x - 4y = -11\\x + 3y = 3\end{array}\right. $

In Exercises 11 - 20, solve the system by the method of substitution. Check your solution(s) graphically.

$ \left\{\begin{array}{l} \hspace{1cm} 3x + y = 2\\x^3 - 2 + y = 0\end{array}\right. $

In Exercises 11 - 20, solve the system by the method of substitution. Check your solution(s) graphically.

$ \left\{\begin{array}{l} \hspace{1cm} x + y = 0\\x^3 - 5x - y = 0\end{array}\right. $

In Exercises 11 - 20, solve the system by the method of substitution. Check your solution(s) graphically.

$ \left\{\begin{array}{l}y = -2x^2 + 2\\y = 2\left(x^4 - 2x^2 +1\right)\end{array}\right. $