Which explains whether or not the graph represents a direct variation?
y
5
4.
-
3
2
5 4 3 2 1
1 2 3 4 5 X
1
4
ws
O The graph has a constant of variation of 3, so it represents a direct variation.
O The graph has a slope of 3, so it represents a direct variation,
O The graph has a positive slope, so it does not represent a direct variation.
O The graph does not begin at the origin, so it does not represent a direct variation.
the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.
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