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i can try..
so what i've done so far is: -2=-2x to the second power. how do i simplify that to get x alone?
i don't know how to undo the power
I'm sorry..:( i really wanna help but I'm only in 7th grade.. I'm sorry
i know i count help you but can someone help me?
i'm supposed to substitute the -2 for y, not x
What is the product of -2 times -2 times -2? To undo the (-2)^2, recall that the power in this case means the product of two -2 s. Then, multiply that product by the beginning -2.
^ that would give me a value for y. i already have that. its -2. i need a value for x @Directrix
>>i'm supposed to substitute the -2 for y, not x Not so. The point is (-2, y). In an ordered pair (x, y), x is first. In this problem x = -2 and you solve for y.
In the posted problem, y is not equal to -2.
OHHHHHH I GET IT! in the 2 problems before it, i was supposed to find the x value. i didn't read this one all the way through. thanksssss
Okay. Answer this and you will have the value of y. What is the product of -2 times -2 times -2 ?
No. Try again.
-2 times -2=4 4 squared=16
order of operations....
Y = -2 * ( -2 ) ^2 y = -2 * ( 4) y = ?
or -8 .-. i'm confused
>-2 times -2=4 The 4 is not squared. It is multiplied by -2.
i already multiplied it by -2 though
This what we are doing. (See drawing.) On this order of operations you are doing, recall that operations within parentheses are done first before any of that left to right business. |dw:1446685853469:dw|
y = - 8. Yes.
alright, thanks :)