Examine the table, which contains some points of a quadratic function
1 answer:
Answer:
Hello,
Step-by-step explanation:
A: roots are x=-1 and x=5 : x-intercepts are (-1,0) and (5,0) :TRUE
B: There are only 2 roots for quadratic function : FALSE
C: the function has a minimum for x=2 but the value of that minum is -9 : FALSE
D: (-oo,-9) :decrease ok, but (-x,oo) false: FALSE
E: TRUE (function is y=(x+1)(x-5)=x²-4x-5
F: minimum=-9 TRUE
G: TRUE (see graph jointed)
H: TRUE like F
I: FALSE
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That means that A and B are not correct.
If you have a graph where a>1 the graph will expand.
If you have a graph where a<1 but greater than 0 the graph will shrink.
y = 1/2 x^3 + 4 is the answer you want.
Just to show you the graphs, I have enclosed a graph of the three choices.
y = x^3 + 4 is red
y = 2x^3 + 4 is blue
y = (1/2) x^3 + 4 is green. The green one is the one you want.
