New SAT Math - Calculator

This subject covers the use of a calculator to solve mathematical problems on the New SAT, enhancing students' problem-solving skills and efficiency.

Calculator Basics on the SATEfficient Arithmetic and Order of OperationsFractions, Decimals, and Conversions
Solving Equations and SystemsGraphing Functions and Analyzing GraphsWorking with Statistics and Data
Solving Finance and Shopping ProblemsGeometry and Measurement ApplicationsTime, Distance, and Rate Problems
When to Use Your CalculatorAvoiding Common Calculator PitfallsDouble-Checking and Estimating
Calculator Basics on...Efficient Arithmetic...Fractions, Decimals,...Solving Equations an...Graphing Functions a...Working with Statist...Solving Finance and ...Geometry and Measure...Time, Distance, and ...When to Use Your Cal...Avoiding Common Calc...Double-Checking and ...
Advanced Topics

Solving Equations and Systems

Equation Solving with Calculators

Some calculators have a built-in equation solver, making it possible to find solutions to linear equations or even simple systems quickly.

Systems of Equations

For two-variable systems, you can use substitution or elimination, but a graphing calculator can often solve these directly.

Steps:

  1. Enter equations in the calculator's equation solver.
  2. Use the 'solve' function to find the values of variables.

Why This Is Useful

This saves time on the SAT and helps avoid calculation errors.

Key Formula

\[x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\]

Examples

  • Solving \( 2x + 3 = 11 \) by entering the equation and using the solve function.

  • Finding the intersection of \( y = 2x + 1 \) and \( y = -x + 4 \) using the graphing function.

In a Nutshell

Use your calculator's solver to tackle equations and systems with confidence.

Key Terms

Equation Solver
A calculator function that finds the value of a variable that makes an equation true.
System of Equations
Two or more equations with the same variables, solved together.
Next
Graphing Functions and Analyzing Graphs