In my view, the best plot for bivariate data is a scatter plot.
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A hyperbola.
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.
The graph must be linear and pass thru the origin
For a direct variation, y=kx where k is the constant of variation if x =0 then y=0 and the graph of y=kx passes through the origin. -Indiana Prentice Hall Algebra 2 Text Book.
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.
Joint variation
A joint bar graph is a joint set of graphs.
The slope of the graph of a direct variation is always positive.
A hyperbola.
find the constant of variation and the slope of the given line from the graph of y=2.5x
i have no clue
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.
k is the constant of variation and is the gradient (slope) of the relevant graph.
No.
The graph must be linear and pass thru the origin
Inverse variation does not pass through the origin, however direct variation always passes through the origin.
equation, table or a graph