Question

Can I get some help on this question i'm already having a bad day and I just want it over with

What linear function can be represented by the set of ordered pairs?

{(−4, 15), (0, 5), (4, −5), (8, −15)}



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f(x)=

$\text{Basic}$

Answer 1

f(x) = (. ) x + 5
Using f(x) = mx + b,
(0, ?) is the y - intercept so b=5
The slope is (y2-y1)/(x2-x1) for any 2 points in a function...
(5 - 15)/ (0 - -4)= -10/4 = -5/2 is the slope , so m= -5/2
....drum roll please ..... f(x) = (-5/2) x + 5