Answer:
Explanation:
I reformatted the question to clarify the statements. Please check for accuracy.
Given that D(x) = 2x, select all of the following that are true statements.
1. D( x) is a direct variation.
2. D( x) is a function.
3. D( x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4).
4. x is the dependent variable.
5. D(6) = 3
----------
1. D( x) is a direct variation. YES. D(x) will always be 2 times x.
2. D( x) is a function. YES. Each calculated D(x) will have a unique point.
3. D( x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4). YES. Each (x,y) shows a value of y that is 2 times x, as per the equation's instructions.
4. x is the dependent variable. YES. y depends on what value is chosen for x.
5. D(6) = 3 NO. d(6) = 2*(6) or 12