what numeric pattern and expression is
-2 , -4 , -6, -8
The numeric pattern is decreasing by 2 each time.
The expression for this pattern could be written as n = -2x, where n represents the term in the pattern and x represents the position of the term in the pattern.
To determine the numeric pattern and expression for the sequence -2, -4, -6, -8, we need to examine the differences between consecutive terms.
The difference between each consecutive term is -2.
Therefore, we can conclude that the numeric pattern is a decreasing sequence with a common difference of -2.
To express this numeric pattern as an expression, we can use the general formula for arithmetic progressions:
An = A1 + (n - 1) * d
where An represents the nth term, A1 represents the first term, n represents the position of the term in the sequence, and d represents the common difference.
In this case, the first term A1 is -2, and the common difference d is -2.
Therefore, the expression for this numeric pattern is:
An = -2 + (n - 1) * (-2)