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McGraw Hill Glencoe Geometry, 2012

MH

McGraw Hill Glencoe Geometry, 2012 View details

6. Two-Dimensional Figures

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Exercise 60 Page 64

Does either of the equations have an isolated variable in it?

Method: Substitution
Solution: $x = 3,$ $y = - 8$

Practice makes perfect

In this system of equations, at least one of the variables has a coefficient of $1 .$ Therefore, we will approach its solution with the Substitution Method. When solving a system of equations using this method, there are three steps.

Isolate a variable in one of the equations.
Substitute the expression for that variable into the other equation and solve.
Substitute this solution into one of the equations and solve for the value of the other variable.

Subchapter links

Check Your Understanding p.61

Practice and Problem Solving p.61-63

H.O.T. Problems p.63

Standardized Test Practice p.64

Spiral Review p.64

Skills Review p.64