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solving simultaneous linear equations graphically

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Reply 40
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z_o_e
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11
Original post by z_o_e
Oh!



I tried Again!!!!

:s-smilie:

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1464611990368.jpg179.9KB
Original post by z_o_e


Yep, looks right. :biggrin:
Reply 42
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z_o_e
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11
Original post by TheOtherSide.
Yep, looks right. :biggrin:


Thank you!!!! ♥

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Reply 43
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z_o_e
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11
Original post by TheOtherSide.
Yep, looks right. :biggrin:


Heya xx
Is it okay if you can check this please.


They are different questions.
But you know the work sheet question I got something else I got -30 and how did they get positive 2 for the first one.



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1465230179752.jpg45.0KB
1465230195845.jpg53.3KB
1465230254638.jpg41.7KB
Original post by z_o_e
Heya xx
Is it okay if you can check this please.


They are different questions.
But you know the work sheet question I got something else I got -30 and how did they get positive 2 for the first one.



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Wait, which question am I looking at? :colondollar:
Reply 45
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z_o_e
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Original post by TheOtherSide.
Wait, which question am I looking at? :colondollar:


Both they are two different questions.



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Reply 46
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z_o_e
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Original post by TheOtherSide.
Wait, which question am I looking at? :colondollar:


Let's look at this one
The answers are my teachers not mine but I believe they are wrong.


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1465231300156.jpg225.3KB
Original post by z_o_e
Let's look at this one
The answers are my teachers not mine but I believe they are wrong.


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The answers in the table are all fine. I'll look at the other equation if you want.
Reply 48
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z_o_e
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Original post by TheOtherSide.
The answers in the table are all fine. I'll look at the other equation if you want.


How are they fine????

I got this

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(edited 7 years ago)
1465231688850.jpg37.8KB
Original post by z_o_e
How are they fine?

I got this

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When you square a negative number, it'll always be positive. I think you did −(42)=−16-(4^2) = -16 when it is in fact −42=16-4^2 = 16
Sketch the two graphs with a sensible scale. Solving by sketch is a terrible method!
Reply 51
Avatar for z_o_e
z_o_e
OP
11
Original post by TheOtherSide.
When you square a negative number, it'll always be positive. I think you did −(42)=−16-(4^2) = -16 when it is in fact −42=16-4^2 = 16


Ohhhhhhhhh

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Reply 52
Avatar for z_o_e
z_o_e
OP
11
Original post by TheOtherSide.
When you square a negative number, it'll always be positive. I think you did −(42)=−16-(4^2) = -16 when it is in fact −42=16-4^2 = 16

I got this nowww :frown:
I cannot view latex on my phone


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1465232344156.jpg39.8KB
Reply 53
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z_o_e
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11
I tried.

But my calculations are wrong!!!

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1465232626994.jpg182.9KB
Original post by z_o_e
I got this nowww :frown:
I cannot view latex on my phone


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Almost! Here, you've got to remember that two negatives make a positive, so the answers for -4 and -2 should be different.
Reply 55
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z_o_e
OP
11
Original post by TheOtherSide.
Almost! Here, you've got to remember that two negatives make a positive, so the answers for -4 and -2 should be different.


Got it and then... :smile:

I got 22 and 4

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Original post by z_o_e
Got it and then... :smile:

I got 22 and 4

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That's fine!
Reply 57
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z_o_e
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Original post by TheOtherSide.
That's fine!


Thank you so much ♡

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Original post by z_o_e
Thank you so much ♡

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Happy to help. :yep:

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