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Notes for Week 2 Name: ______________________________
MAT 0024C
2.4 Applying the Principles to Formulas
Isolating a variable
Examples:
Q: Solve for a: 3x a y= + .
A:
Q: Solve for w: 19 2 2l w= + .
A:
Q: Solve for a: 5(2 )n a bm c+ = −.
A:
Q: Solve for w: 4 6w x y+ =.
A:
Q: Solve for v: mD v= .
A:
1
2.5 Translating Word Sentences to Equations
Examples:
Q: Translate the sentence to an equation and then solve: Six added to p is
negative two.
A:
Q: Translate the sentence to an equation and then solve: Three sevenths of a
number is equal to negative nine-eighths.
A:
Q: Translate the sentence to an equation and then solve: Tripling the difference
of a number and five produces negative fifteen.
A:
Q: Translate the sentence to an equation and then solve: Five more than four
times a number is equal to seven subtracted from that number.
A:
2
2.6 Solving Linear Inequalities
*The only difference between solving an inequality and an equality is that if you
multiply ...

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