1. Tell whether each set of coordinates would fit in the given equation (yes or no)
Show why or why not
a.
y = 3x - 5
(5, 10)
(-2,-1)
b.
y = -2x + 12
(5,-2)
I
(4,4)

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

597

step-by-step explanation: