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Transcript
How Do We Solve By Substituting Variables Section 7.2 in your textbook Please solve for the variable indicated: 9x + y = 7 ; y 3x + 6y = 9 ; x 2x – 2y = 8 ; y √ Check the equation you would use to isolate the variable most easily, in each set: What if? Let’s check out “Mrs. Jenkins.” Solve the linear system using substitution: Remember to check your solution in each of the original equations! Remember, when x or y is not yet isolated, we need to solve for the easiest variable: A little more challenging… …you can handle it! Checkpoint 4 U!
