19,879
edits
Changes
→About Direct Proportionality
: A [[Scatter Graph|scatter graph]] showing a '''directly proportional''' relationship has a [[linear]] [[gradient]] that passes through zero, it has a [[y-intercept]] of zero.
: On a [[proportional]] [[Scatter Graph|scatter graph]] when one [[variable]] doubles, the other doubles or when one triples the other triples.
: When two variables are '''directly proportional''' when any value for y is divided by its corresponding value for x it will always give a constant value.
: Two variables are said to be '''directly proportional''' when they always vary by the same ratio.
===Examples===