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evaluate what ?
@Nnesha I'm supposed to get an answer. At the back of my textbook the answers are: a) 1 b)4 c) 2
I just don't understand how they came to be and I must show my work.
here, look at the x values that are 3. The Y values are 1,4, and 2
ohhhhhhhhhhhhh I see. That makes sense!
You normally have f(x),right? In this case, they replaced the x with 3. x=3.
@Bee_see Mhm i get it. Wow that was pretty simple. Do you have time for another one? It's still related to notations but a bit more complicated....
OK. Let's see it.
Determine f(-2), f(0), f(2) and f(2x) for each function. a) f(x) = -3x^2 + 5 b) f(x) = 4x^2 -2x + 1
Do i just plug them in for x
Like that? ^
everything is right except for the last one. It's f(2x), right?
Is it -7x instead?
do you understand? When you are multiplying variables with exponents, you are going to add them so...(2)(2)=4 and (x)(x)= x^1+1=x^2
Oh okay and yes, i understand that
great. can you do part b? I can check the answers if you want me to.
the same thing goes for part b as well, right?
alright sounds good
@Bee_see My wifi started to lag so I took a screenshot of the draw section thing lol
Am I correct though?
haha that's great! thanks for the help :)