Question

Which equation represents a direct variation? Plz Help

Answer 1

An equation that represents direct variation has the form \( y = kx \), where \( k \) is a non-zero constant. In this equation, \( y \) varies directly with \( x \), meaning that if \( x \) increases, \( y \) increases proportionally, and if \( x \) decreases, \( y \) decreases proportionally as well.

For example:
- \( y = 3x \) represents a direct variation (with \( k = 3 \)).
- \( y = -2x \) also represents a direct variation (with \( k = -2 \)).

If you have specific equations you'd like to evaluate for direct variation, feel free to share them!