Question

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 ?

Answer 1

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

Answer 2

Y=2x_5

Answer 3

Y=2x-5