Grade 9
chaper 4 ( linear equations in two variables)
❌don't spam ❌​

Step-by-step explanation:

1)

-1,9

0,7

1,5

2,7

2)

-1,

0,9

1,

2,

3)

-4,-1

0,0

4,1

8,2

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6