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The statement "y varies directly as x," means that when x increases, y increases by the same factor. In other words, y and x always have the same ratio where k is the constant of variation.
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∙ 15y ago
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Can slope k of a direct variation be positive?
The slope of the graph of a direct variation is always positive.
Do the slope of direct variation changes as you move along the graph?
No.
What does k correspond to in a direct variation function?
k is the constant of variation and is the gradient (slope) of the relevant graph.
What are two properties of a direct variation graph?
Positive or Negative........I think...
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.
Can slope k of a direct variation be positive?
The slope of the graph of a direct variation is always positive.
Does the graph of a direct variation pass through the origin?
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.
Do the slope of direct variation changes as you move along the graph?
No.
What does k correspond to in a direct variation function?
k is the constant of variation and is the gradient (slope) of the relevant graph.
What the three ways to represent a direct variation?
equation, table or a graph
What are two properties of a direct variation graph?
Positive or Negative........I think...
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.
How can you tell by examining a graph if a line represents a direct variation?
The graph must be linear and pass thru the origin
How do you know if an equation is direct variation?
There are three ways: a table, a graph, and an equation.
How can you tell if a line is the graph of a direct variation?
It is a straight line passing through the origin.
How can you tell of a line is the graph of direct variation?
It is a straight line passing through the origin.
Does the graph of an inverse variation pass through the origin?
Inverse variation does not pass through the origin, however direct variation always passes through the origin.
