Question

If the point (a, 7) lies on the graph of the equation 5x - y = 8, then a= -3, 3, 1/5

Answer 1

Solce is in the picture

Good luck :)

Answer 2

`a=3`

Explanation:

we have

`5x-y=8`

we know that

If a ordered pair lie on the graph of the equation

then

the ordered pair must be satisfy the equation

so

Substitute the value of point
`(a,7)` in the equation and solve for a

`5(a)-7=8`

`5(a)=8+7`

`5(a)=15`

`a=15/5=3`