Direct Variation

My Definition

Key Characteristics

The following are true of direct variation:

- It is used to describe proportional relationships.
- It can be written in the form,
*y*=*kx*,*k*≠ 0. - It can be represented on a graph by a linear function that passes through the origin.

Example

Non-example

*y* = 3*x* - 4

TEKS: 7(4)(C), 8(5)(E)