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Help me ASAP please answer C and D for 4 is y= x/2 -1 and y= x/2-2

Help me ASAP please answer C and D for 4 is y= x/2 -1 and y= x/2-2-example-1
User SteveGoob
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Use the data in the given table for #4 to find the slope of the line through these four points. I did this this way:
5-3 2
m = -------- = ---- = 1/2
12-8 4

Now use y = mx + b to determine the y-intercept:

Borrowing the coefficients (0,0) from the table,

0 = (1/2)(0) + b. Thus, b = 0, and y = (1/2)x (answer)
User Sami Eltamawy
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