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Linear equations
Solve any linear equation, spot when something's off, and turn real situations into math.
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By the end, you'll be able to:
- Explain what a solution really means
- Solve equations with fractions, decimals and parentheses
- Recognize when there's no solution or infinitely many
- Turn a word problem into an equation
- Rearrange a formula for any variable
What a solution really meansA solution is a value that makes both sides equal. Everything else in algebra comes from that.One- and two-step equationsUndo the operations in reverse order, like taking off your shoes after your socks.Variables on both sides and parenthesesClean up each side, then bring the variables together.Equations with fractions and decimalsGet rid of the fractions first. It's almost always worth it.No solution or infinitely manySometimes the variable disappears. What's left tells you everything.Turn situations into equationsName the unknown, translate the sentence, then solve.Rearrange formulasIt's the same algebra, except the other letters act like numbers.Unit test10 new questions, harder as you go. No hints, and you'll see every solution at the end.
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Lines and slope
Read, find and graph slope.
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Factoring and quadratics
Factor, then solve quadratic equations.
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