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All direct variation graphs are linear and they all go through the origin.
if it passes through (0,0) then it is a direct variation
Graphs of direct variation pass through the origin so the y-intercept would be 0.
If the functional relationship is of the form y = cx where c is the constant of variation. In graphical form, it is a straight line through the origin.
Constant variation is a relationship between two variables where one is a fixed multiple of the other. The graph of such a relationship is a straight line through the origin.
Inverse variation does not pass through the origin, however direct variation always passes through the origin.
because water has a more narrow margin of variation through the year
The formula direct variation is xk=y, where k is the constant of variation.Direct variation functions always pass through the origin. Direct variation functions are linear functions (goes in a straight line), except that they pass through the origin. Regular linear functions don't pass through the origin. That is the only difference.
It is 2/3.
yes, a graph of a direct variation must pass through the origin because direct variation is always in form of y=mx where x and y are variables and m is a constant.
Inherited variation is what is passed on through genetics, for example, your eye color. Environmental variation is influnced by the environment, for example, scars or clothing styles.
Not to sure
the variation in the forms of adult vertebrates probably arose through mutations in dominant genes
the variations in genes, genes of sexually reproducing organisms will vary due to crossing-over of genes, mutations, and adaptations. In asexually reproducing organisms genes will vary through adaptations and mutations.
All direct variation graphs are linear and they all go through the origin.
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if the line runs through the origin it is a direct variation no matter if it is increasing or decreasing