Mike C Ben E Tyler R 67

We found the 4ac part of the b2-4ac equation and it came out to 144. We knew that the square root of 144 is 12 so we knew k had to be equal to 12 to have one solution. Based off this, we knew in order for a positive number to result from the equation, k had to be greater than 12. In order for a negative number, k had to be less than 12.