Warm up 11/27 Unit 3 Lesson 10

Front

What is a system of equations?

Back

A system of equations is a set of two or more equations with the same variables. The solution is the point where the equations intersect.

Front

What does it mean to solve a system of equations using substitution?

Back

Solving a system using substitution involves solving one equation for one variable and then substituting that expression into the other equation.

Front

How do you write an ordered pair?

Back

An ordered pair is written as (x,y), where x is the value of the first variable and y is the value of the second variable.

Front

Back

(4,-3)

Front

Back

(-2,1)

Front

Back

(-3,-2)

Front

Back

(1,2)

Front

Back

(-1,4)

Front

What is the first step in solving a system of equations by substitution?

Back

Identify one equation and solve for one variable in terms of the other variable.

Front

What is the second step in solving a system of equations by substitution?

Back

Substitute the expression found in the first step into the other equation.