We often use the term direct variation to describe a form of dependence of one variable on another. An equation that makes a line and crosses the origin is a form of direct variation, where the magnitude of x increases or decreases directly as y increases or decreases. Direct variation and inverse variation are used often in science when modeling activity, such as speed or velocity.
Sample Problems (12)
Need help with "Arithmetic Series" problems? Watch expert teachers solve similar problems to develop your skills.
|-3 +||-3||+ 0 + ... 30|
|∑(1 − 2i)|
|i = 0|
How many terms in 5 + 7 + 9 + ... must be added to make 572.