Pre-Algebra
Algebra Readiness flashcards
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- What does “Slope from Two Points” mean?Slope as Rate of Change
- The signed rate of vertical change with horizontal change.
- What important condition applies to slope from two points?Slope as Rate of Change
- A vertical line has undefined slope, not zero slope.
- What does “Horizontal and Vertical Lines” mean?Slope as Rate of Change
- Distinguishing constant-height lines from constant-horizontal-position lines.
- What important condition applies to horizontal and vertical lines?Slope as Rate of Change
- Zero slope and undefined slope describe different orientations.
- What does “Slope-Intercept Models” mean?Writing Simple Linear Equations
- A linear rule combining an initial value with a constant rate.
- What important condition applies to slope-intercept models?Writing Simple Linear Equations
- Use only contextually allowed inputs.
- What does “Using a Point to Find an Intercept” mean?Writing Simple Linear Equations
- Recovering a line’s zero-input value from a slope and a known point.
- What important condition applies to using a point to find an intercept?Writing Simple Linear Equations
- A point’s y-coordinate is the intercept only when its x-coordinate is zero.
- What does “Fixed and Variable Costs” mean?Mixed Problem-Solving and Modeling
- A model combining a one-time amount with repeated per-unit amounts.
- What important condition applies to fixed and variable costs?Mixed Problem-Solving and Modeling
- A fixed charge is counted once, not once per unit.
- What does “Solving a Contextual Model” mean?Mixed Problem-Solving and Modeling
- Finding an unknown input from a modeled total and known parameters.
- What important condition applies to solving a contextual model?Mixed Problem-Solving and Modeling
- A count of visits usually must be a nonnegative integer.