Estimating answers (age 13+)
Use graphs of linear and quadratic functions to estimate output values for given inputs, find approximate solutions to equations, and interpret graphical information in real-world contexts
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Can your child use a graph — whether a straight line or a curve — to read off an answer to an equation approximately, rather than solving it algebraically?
Use graphs of linear and quadratic functions to estimate output values for given inputs, find approximate solutions to equations, and interpret graphical information in real-world contexts
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Check understanding
- Read off an approximate y-value for a given x from a plotted curve
- Find approximate solutions to an equation by identifying where a graph crosses the x-axis or another line
- Interpret a real-world graph (e.g., distance–time) to answer contextual questions
“Can your child use a graph — whether a straight line or a curve — to read off an answer to an equation approximately, rather than solving it algebraically?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Algebra
- Age range
- Ages 13–14
Standards