For each table, determine whether it shows a direct variation, an inverse variation, or neither.
Write the equation for the direct or inverse variation when it exists.
x y direct or inverse? and what is the equation
5 6
10 12
30 25
The first table shows direct variation, as the ratio between y and x remains constant.
The equation for this direct variation is y = 1.2x
The second table also shows direct variation, as the ratio between y and x remains constant.
The equation for this direct variation is y = 1.2x
The third table does not show direct or inverse variation, as the ratio between y and x changes inconsistently.