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i only need help with #23

I Only Need Help With 23 class=

Sagot :

Answer:

23.  y = 2x - 3

Step-by-step explanation:

Slope m = (y2-y1)/(x2-x1)

Using coordiates (2,1) and and (1, -1)

m = (-1 - 1)/(1 - 2) = (-2)/(-1) = 2

then y = mx + b

Using coordinates (1, -1) then

-1 = 2(1) + b

-1 = 2 + b

b = - 3

so y = 2x - 3

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