For
y=ax²+bx+c
the x value of the axis of symmetry is -b/(2a)
so test them
A., -b/(2a)=-(-8)/(2*-2)=8/-4=-2, yep
B. -b/(2a)=-2/(2*1/2)=-2/1=-2, yep
C. -b/(2a)=-(-16)/(2*4)=16/8=2, nope, need -2
D. -b/(2a)=-12/(2*3)=-12/6=-2, yep
answer is C
Answer:
the last one is 4−y^3
the others i dont know sorry :(
Answer:
Graph 3
Step-by-step explanation:
f(x) inverse = 1/f(x)
=> 1/(1/2x) + 1(1/4)
=> 2x + 4
=> Third graph (Second row, first one)
Answer:
1/3 has to be multiplied by 3
2/6 also has to be multiplied by 3
2/6 can be simplified to 1/3.
You know from the given information, there are 20 people in total.
When asked 14 people stated that they liked chocolate. This leaves a group of people out of 20 who do not like chocolate.
20-14=6
You know from this that 6 people do not like chocolate while 14 of them do
Hope I helped :)
