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If the variables x and y are in direct proportion then the graph of y against x is a straight line through the origin.
If the variables x and y are in inverse proportion then the graph of y against x is a rectangular hyperbola. Alternatively, the graph of y against 1/x (or 1/y against x) is a straight line through the origin.
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What do all direct variation graphs have in common?
All direct variation graphs are linear and they all go through the origin.
What is the direct of relationship in statistics?
graphs,distinguisment
What are the graphs of the inverse trigonometry functions?
If you reflect a function across the line y=x, you will have a graph of the inverse. For trigonometric problems: y = sin(x) has the inverse x=sin(y) or y = sin-1(x)
Why do scientists plot graphs?
It makes it easier to see trends and direct relationships in data.
What is the y-intercept of the graph of a direct variation equation?
Graphs of direct variation pass through the origin so the y-intercept would be 0.
