How do I interpret the graph of a linear function?

Sep 14, 2014

Linear functions have a degree of 1.

Examples:

$2 x + 3 y = 9$
$y = 4 x + 7$
$y = \frac{1}{2} x$

If the linear function is in slope intercept form, $y = m x + b$, then $m$ indicates the slope and $b$ indicates the y-intercept.

If the linear function is in standard form, $A x + B y = C$, then the slope is found by the quotient, $- \frac{A}{B}$.

If you want to find the x-intercepts substitute in a value of 0 for the $y$ variables.

If you want to find the y-intercepts substitute in a value of 0 for the $x$ variables.