Question

1. Is (2,4) a solution to the equation y = x – 2?
2. Is (-3,-9) a solution to the equation y = 3x?
3. Which of (3, 5), (4, 6), (5, 7), and (6, 8) are solutions to y = x + 2?

Answer 1

The best way to handle this is to simply plug the (x,y) values into the equation and verify that the equality is met.

(i.e):
y=x-2 plugging in (2,4) means that 4=(2-2), which is obviously a false statement (i.e. 4=0 is false)

Answer 2

well all are similar questions.

For example, the first one:

Is (2,4) a solution to y=x-2 ?
What we do, is plug in the values x=2 and y=4
into the equation and see if it's true or not

y=x-2
--> replacing x and y with their values, we get:
(4)=(2)-2

Which means
4=0

And this is not true!

So, (2,4) is NOT a solution for y=x-2

Answer 3

thanks Guys

Answer 4

what about the other two questions ?

Answer 5

can you try them and we'll check your work ?
or let us know where you have difficulty

Answer 6

i did em okay for number two i said its not a solution & number three i said ( 4,6 ) & ( 5.7 ) am i correct ?