Solve the system by Substitution 4x+4y=−4

y=−7x−7

(-1, 0)

(0, 2)

(0, -4)

(0, -1)

(-1,0)

Step-by-step explanation:

I used a graphing calculator and that is the solution

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

the answer would be 484

step-by-step explanation:

just multiply 0.484 times 1,000 (formula)