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math people...i need help

M

ManBearPig

Diamond Member
so im doing this online crap, and its asking what the x value of the x intercept is.

-7/3x+2.667

wouldnt it be -7/3?
 
thanks guys....heres one that wont work....ive got no idea

Let f(x) = 2x2 + 4.

Find the average rate of change of f(x) between x=-1 and x=3.

wouldnt it be 8? wtf?
 
got that 😀 im on this now haha

Originally posted by: Heen05thanks guys....heres one that wont work....ive got no idea

Let f(x) = 2x2 + 4.

Find the average rate of change of f(x) between x=-1 and x=3.

wouldnt it be 8? wtf?
Click to expand...
 
Originally posted by: Heen05
thanks guys....heres one that wont work....ive got no idea

Let f(x) = 2x2 + 4.

Find the average rate of change of f(x) between x=-1 and x=3.

wouldnt it be 8? wtf?
Click to expand...

average rate of change with respect to x would be (change in f(x))/(change in X)
 
The object is to bring the value of y to zero, because it is at that point we find the x-intercept.

The formula we use is y = mx + b (slope-intercept) where m equals slope and b equals the y-intercept

y = mx + b

y = -7/3x + 2.667

0 = -7/3x + 2.667

-7/3x = -2.667

x = 1.143
 
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