Math help please
posted by UMACBLACKBELT
these questions are for practice, they don't count as points, but i don't understand how to solve them.. can someone please explain them to me??
which function rule represents the data in the table below?
input1 2 3 45
output915212733
A)y=4+5x
B)y=3+6x
C)y=5+4x
D)y=6+3x
Which function rule represents the data in the table?
x32101
y1 2 5811
A)y=3x8
B)y=1/3x8
C)y=1/3x+8
D)y=3x+8
Which quadratic rule represents the data table?
x10123
y 656914
A)y=2x^2+5
B)y=x^2
C)y=x^2+5
D)y=x^2+5
I don't exactly understand these questions.. @Writeacher or @Mrs. Sue can you help me?

Steve
input1 2 3 45
output915212733
Note that y increases by 6 for each increase of 1 in x. So, your rule will look like
y = 6x
But, using x=1, 6x=6, but y=9. So, we're too low by 3. That means
y = 3+6x
You can easily verify that this rule works for the other entries in the table.
Similarly, for
x32101
y1 2 5811
y grows by 3 for each 1 in x. So, try
y = 3x
But 3(3) = 9, so that means
y = 3x+8
For the quadratic,
x10123
y 656914
Note that f(1) = f(1). That means the vertex is midway between them, at x=0. Since y(0) = 5, we try
y = (x0)^2+5 = x^2+5
You can see that that rule works for all the table entries. 
UMACBLACKBELT
Thank you so so much, i understand now :)

hello :)
which quadratic rule represents the data in the table? x: 10123 y:454 14
I also need help! thanks 
hello :)
which quadratic rule represents the data in the table? x: 10123
y:454 14
I also need help! thanks
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