5^-3 is 1/125
The negative in the exponent makes it so there is a 1 over the problem if there was no negative. When you have a negative in the exponent, the answer will be the reciprocal (opposite) of the question with no negative.
For example,
9^2 = 81
9^-2 = 1/81
PART A:
x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
y | 6 | 5.5 | 5 | 4.5 | 4 | 3.5 | 3 | 2.5 | 2 | 1.5 | 1 | 0.5 | 0 |
x=hours
y=candle length
PART B:
Yes it is a function because you can input the values
PART C:
Yes, it will still be a function but with a different different y value
Y = 3x2 + -27
Reorder the terms:
y = -27 + 3x2
Solving
y = -27 + 3x2
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Simplifying
y = -27 + 3x2