The table which shows that y vary directly with x is the first table, second table and third table.
What is an equation?
An equation is an expression that shows the relationship between two or more numbers and variables.
From the first table, using the points (1, 3) and (3, 9):
y = 3x
From the second table, using the points (-4, -2) and (-2, -1):
y = (1/2)x
From the third table, using the points (-2, 2) and (-1, 1):
y = -x
The table which shows that y vary directly with x is the first table, second table and third table.
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