How do you solve abs(k-8)=0?

1 Answer
Aug 2, 2015

k = 8

Explanation:

The absolute value function does nothing here.

Usually if you remove a abs function, you put +- on the other side of the equation. But +-0 = 0. So,

abs( k − 8 ) = 0
=> k - 8 = +- 0 = 0
# => k = 8

You can verify this by drawing the graph of the function f(x) = abs ( x - 8 ) and noting that the point where it meets the x-axis is unique.