fidn the ordered pairs y= 2/5 x-2

Question

need 4 pairs to complete the table

x             y

0
 
5
 
 
             1
 
            -3

Answer 1

For the first 2 pairs just substitute for x and solve for y

 

y = (2/5)*0 - 2

 

y = 0 - 2

 

y = -2

 

(0, -2)

 

y = (2/5)*5 - 2

 

y = 2 - 2

 

y = 0

 

(5,0)

 

For the last 2, substitute for y and solve for x

 

1 = (2/5)x - 2     add 2 to both sides to isolate x

 

3 = (2/5)x     Multiply both sides by (5/2) 

 

15/2 = x

 

(15/2, 1)

 

-3 = (2/5)x - 2     same procedure as before

 

-1 = (2/5)x

 

-5/2 = x

 

(-5/2.-3)