Question

Please I need help on this ! If anyone can that would be great!! <3

Answer 1

Explanation:

(A)The given equations are:

`x-y=3` and
`x+y=3`

Taking the ordered pair (3,0),

`3-0=3` and
`3+0=3` which is satisfied. Thus, option A (3,0) is correct.

(B) The two equations are:

`x-y=3` and
`x+y=3`

Adding both the equations, we get

`2x=6`

`x=3`

Therefore, substituting the value of x in any of the two given equations,

`3-y=3`

`y=6`

Hence, x=3 and y=6

(C) Let "b" represents Becky's score and "C" be Cathy's score.

Then, According to the question, we get

`b=c-5` and
`b+c=185`

Thus, Option B is correct.

(D) The given equations are:

`x+y=6` and
`x=y+5`

Now, substituting the value of x=y+5 in the equation
`x+y=6`, we get

`(y+5)+y=6`

Thus, option C is correct.