So if k > 4, so then in the equation y=mx+b it will be y=2x+4..I THINK
so thats 2 roots
so how do we solve for only one root or no roots
because if we make both equations equal to each other, we will get 4 every time :s this is where i am confused
WHAT WE ARE TRYING TO SOLVE FOR IS THE VALUE OF B IN y=mx+b for 3 equations soo 3 different values of b
I've already told you the answer.
If there aren't any intersection points then the value of is ANYTHING LESS THAN 4. So use a letter like and say that .
If there is only one intersection point then the value of IS 4.
If there are two intersection points then the value of is ANYTHING GREATER THAN 4. So use a letter like and say that .