Asked by Haley
Which equation has (2,-1) as a solution?
y=2x-1***
y=x+3
y=x-3
y=-2x+1
y=2x-1***
y=x+3
y=x-3
y=-2x+1
Answers
Answered by
Ms. Sue
No.
Did you substitute the numbers for the letters in the equations?
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
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
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!!!
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!!!