1. How to solve Quadratic
Equations By Graphing
BY:Math Group 3
2. Example:
• Y=x²-4x+4
•First step is to indetify the A, B, and C, in this case:
A=1
B=-4
C=4
•Next step is to find the “H” and the “K” (Aka X and Y)
To find the H you need to use the formula -b/2a
-(-4) = -(-2) H=2
2(1)
3. Example:
• Now to find K use the formula 4ac-b²/4a
• 4(1)(4)-(-4)².=16-16= 0/4 = 0
• 4(1) 4
H=2 K=0 Now that you have the H and K put them in the table of values
Now just simply fill in the top part by going to the right and adding 1 to the
given number and going to the left and -1 from the given number just like so
4. Just like this:
• Now to find the bottom part of the table, Use each of them as a
subsitute for x in the original problem, Observe
