Count change of signs to tell positive roots
then replace x with -x and evaluate, then count change in sign for negative roots
initially
+, -, -, +, +, -
3 changes
3 or 1 positive roots
replacing x with -x
-,-,+,+,-,-
2 changes
2 or 0 negative roots
B is answer
Answer
2nd one
(2,-2) ordered pair -4 y-intercept
Algebraically, that will be expressed as:
÷
= 7, but Im not 100% sure if thats right. You should pick someone else's answer.
