how do you use a table of values to write the y= rule

Question

triciaal · Answer

is this for a linear equation y = mx + b ?

anonymous · Answer

i think it is y = mx + b

triciaal · Answer

b is the intercept the value of y when x = 0 
m is the slope. the slope is the change in y divided by the corresponding change in x. the slope is the same for any 2 points on that line

triciaal · Answer

given the values (x1, y1) and (x2, y2) the slope is y2 - y1 / (x2 - x1)
using one of the points and now you calculated the slope find b 
rewrite using (x, y) for any point on that line with the same slope.

triciaal · Answer

do you have the table of values?

triciaal · Answer

do you have any questions about what to do?

anonymous · Answer

x;0,1, 2, 3
y; 4, 12, 36, 108

anonymous · Answer

ohhh, it think that its y=ab^x

triciaal · Answer

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triciaal · Answer

correction.

I guess the first thing to do is determine if y is an AP or GP