4,2,0,-2,-4
Minus by 2 for each number
4-2= 2
2-2= 0
0-2= -2
-2-2= -4
-4-2= -6
-6-2= -8
Answer : 4,2,0,-2,-4, -6,-8

The mistake is in Step 1. The solver should have also squared
when squaring the other side of the equation.
<h3>Correctly solving</h3>

If the value of a is positive, the line slopes upwards.
Negative 10 and positive 10