Asked by Haley

Which equation has (2,-1) as a solution?
y=2x-1***
y=x+3
y=x-3
y=-2x+1
Answered by Ms. Sue
No.

Did you substitute the numbers for the letters in the equations?

Answered by Haley
?? I don't know what that means- how do I figure this out?
Answered by Haley
Ms Sue?
Answered by Haley
Please:( Idk
Answered by Haley
Uhhh, I believe it is C correct?
Answered by Ms. Sue
y = 2
x = -1
Answered by Haley
So isn't that A?
Answered by Ms. Sue
Is this right?

y=2x-1
2 = (2 * -1) - 1
2 = -2 - 1

Answered by Damon
Which equation has (2,-1) as a solution?
y=2x-1***
y=x+3
y=x-3
y=-2x+1
=======================
Now look
It has to work when x = 2 and y = -1

Try the first one
y=2x-1 so -1 = 2*2 - 1
so
-1 = 4-1
-1 = 3 ******* NO WAY
__________________________'
The second one
y = x + 3 so -1 = 2+3 NO WAY
The third one
y = x - 3 so -1 = 2 - 3 = -1 CARAMBA!!!
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