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Solve each system by substitution. See Example 2.$$\left\{\begin{array}{l}{x+3 y=-4} \\{x=-5 y}\end{array}\right.$$
(-10,2)
Algebra
Chapter 4
Systems of Linear Equations and Inequalities
Section 2
Solving Systems of Equations by Substitution
Equations and Inequalities
Systems of Equations and Inequalities
McMaster University
Baylor University
Idaho State University
Lectures
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This is Chapter 4.2 problems. 17 were given this system of equations and we two sold for X and Y. We already have X solved for in that bottom equation. Now we can plug this value into the X in the first equation. So we have negative five. Why? Plus three y is equal to negative, for we can combine these like terms to get negative to Why is equal to negative for divide to on both sides will give you positive too. Now, since we know what why is we can solve for X doing X is equal to negative five multiplied by two, which is negative. 10. To write your answers and order pair, you could do negative 10 common to
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