# Precalculus 1.1-1.3 Test Outline

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1.1:

• Slope formula.
• Represent lines with: Point-Slope form, Slope-Intercept form, General form, vertical line, horizontal line.
• Parallel and perpendicular lines
• write them
• test for them

1.2:

• vocabulary!
• input, output, independent variable, dependent variable,
• 3 ways of representing functions graphically.
• Algebraic representation of a function.
• Names of parts of a function written in function notation.
• Relationship between f(x), output, and Y.
• Evaluating a function (substitution).
• The careful way: replace the x's with expressions in ().
• Piecewise functions
• Evaluate them by finding which domain matches the input, then use that rule.
• implicit and explicit domains
• polynomial functions
• rational functions (where undefined)
• piecewise functions
• domain and range
• graphing to view the domain and range
• shadow technique
• writing as inequalities
• calculating a difference quotient

1.3

• graphs of ordered pairs (x, f(x))
• vertical line test
• interval notation versus number lines versus inequalities
• increasing and decreasing intervals
• relative maxima and minima
• even and odd functions
• identifying them by symmetry
• identifying them by algebraic substitution