copy each table and complete it by using the corresponding

equation.

y= -x + b

X Y
1 0
2 -1
8 -7
10 ?
20 ?
40 ?

3 answers

find b first.

when x is 1, y is zero, and b
y=-x+b
0=-(-1)+b
means b is -1
Now, when x is 20, what is y?

y=-20+b=-20-1=-21

Y=2x_5

Y=2x-5

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