# How do you write an equation in standard form for a line passing through B(0, 0), C(4, -4)?

Mar 26, 2018

$y = - x$

#### Explanation:

$y = a x + b$
$B \left(0 , 0\right)$
$0 = a \cdot 0 + b$
$0 = b$

$y = a x$
$C \left(4 , - 4\right)$
-4=a*4|:4
$- 1 = a$