Lesson 211 of 1524
2.3 Solving Systems by Substitution
You determined whether a given graph could represent a specific system of equations using your knowledge of horizontal and vertical lines and the slopes and intercepts of those lines
Practice this chapterYou determined whether a given graph could represent a specific system of equations using your knowledge of horizontal and vertical lines and the slopes and intercepts of those lines By isolating a variable in one of the equations, you found an equivalent expression that was substituted into the second equation.
Using this method, the solution to one variable was found. This value was then substituted back into the first equation to find the value of the remaining unknown variable
Be able to solve systems of equations by substituting a variable or an expression; identify more than one way to perform a substitution and decide how to substitute based on how the given equations are written.
Worked example
What does this chapter state?
- 1You determined whether a given graph could represent a specific system of equations using your knowledge of horizontal and vertical lines and the slopes and intercepts of those lines
- 2That claim is the chapter’s own statement.
- 3Answer from the claim, not from where the chapter sits in the book.
Result: You determined whether a given graph could represent a specific system of equations using your knowledge of horizontal and vertical lines and the slopes and intercepts of those lines
Why. The sentence is taken from this chapter’s summary or key concepts.
Answer with the meaning this chapter gives. A nearby idea from the same book is a different term.
Practice margin
This chapter
A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.