Linear Functions and Graphs

Key Questions

  • What does y = mx + b mean?

    This is a linear equation. A linear equation is the representation of straight line.

    This particular equation is called slope intercept form.

    The m in the formula is the slope.

    The b in the formula is where the line intersects the y-axis is this called the y-intercept.

    AJ Speller · 2 · Oct 7 2014
  • What does a linear function model?

    A linear function models a straight line that has a constant slope or rate of change.

    There are various forms of linear equations.

    Standard Form

    Ax+By=C

    where A, B and C are real numbers.

    Slope Intercept Form

    y=mx+b

    where m is the slope and b is the y-intercept

    Point Slope Form

    (y-y_1)=m(x-x_1)

    where (x_1,y_1) is any point on the line and m is the slope.

    AJ Speller · · Oct 7 2014

Questions

Linear and Quadratic Functions