Question

How to find the answer

Answer 1

y=7-2*-1

y=7+2

y=8

y=7-2*3

y=7-6

y=1

y=7-2*5

y=7-10

y=-3

Explanation:

place 8 in first box,1 in second and -3 in third

Answer 2

9,1,-3

Explanation:

y =7-2x

When x=-1,

y= 7-(2×-1)

y= 7-(-2)

y= 7+2

y=9

When x=3,

y=7-2(3)

y=7-6

y=1

When x=5,

y=7-2(5)

y=7-10

y=-3