Question

Which of the following equations does the graph below represent

A.x+8y=40
B.8x+y=40
C.-8x+8y=40
8x+8y=40

Answer 1

`8x+8y=40`

Explanation:

The line passes through
`(5,0)` and
`(0,5)`.

• The equation of the line passing through
  `(a,0)` and
  `(0,b)` is
  `(x)/(a)+(y)/(b)=1`.

`(x)/(5)+(y)/(5)=1 \implies x+y=5 \implies 8x+8y=40`