what would some ordered pairs of 7x-8y=-80 be

Question

i don't understand how to solve this type of equation

Answer 1

7x - 8y = -80

Solve for y

-8y = -7x - 80

divide through by -8

y = (7/8)x + 10

 

Plug in a value for x and find the associated

y value.  It will be easier to use multiples of 8.

 

x=0:  y = 10 ... (0,10)

 

x=8:  y = (7/8)(8) + 10 = 7+10 = 17 ... point (8,17)

 

There are two order d pairs on the line.

You can continue this method to find as

many ordered pairs as desired.