Asked by steve
                Write a function rule for the following table.
x 2 4 6
y 1 0 -1
            
        x 2 4 6
y 1 0 -1
Answers
                    Answered by
            kuai
            
    y = mx + b
f(x) = 2m + b = 1
f(x) = 4m + b = 0
f(x) = 6m + b = -1
-1(2m + b = 1)
4m + b = 0
-2m -b = -1
4m + b = 0
2m = -1
m = -1/2
2(-1/2) + b = 1
-1 + b = 1
-1+ 1 + b = 1 + 1
b = 2
y = mx +b
y = -1/2x + 2
                    Answered by
            Reiny
            
    slope for the first 2 points
= (0-1)/(4-2) = -1/2
y = -1/2 x + b , but (2,1) lies on it
1 = -(1/2)(2) + b
b = 2
y = -(1/2)x + 2
check if third point is on it
LS = -1
RS = (-1/2)(6) + 2 = -1
yes, all is good
y = (-1/2)x + 2
    
= (0-1)/(4-2) = -1/2
y = -1/2 x + b , but (2,1) lies on it
1 = -(1/2)(2) + b
b = 2
y = -(1/2)x + 2
check if third point is on it
LS = -1
RS = (-1/2)(6) + 2 = -1
yes, all is good
y = (-1/2)x + 2
                    Answered by
            Anonymous
            
    Write functions of the following table.
    
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