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Posted by **chloe** on Thursday, February 24, 2011 at 11:31am.

y=1/2x - 1

if x equals 4 what does why equal?

please help

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**chloe**, Thursday, February 24, 2011 at 11:33amplease

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**Ms. Sue**, Thursday, February 24, 2011 at 11:34amy = [(1/2) * 4] - 1

y = 2 - 1

y = 1

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**chloe**, Thursday, February 24, 2011 at 11:38amthankyou so much i find them very hard

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**Ms. Sue**, Thursday, February 24, 2011 at 11:40amYou're welcome.

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**chloe**, Thursday, February 24, 2011 at 11:41amsorry can i ask you one more question related to that one if y=-3 what is the value of x

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**Ms. Sue**, Thursday, February 24, 2011 at 11:44amI showed you how to do the first one. You try this one; I'll be glad to check your answer.

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**chloe**, Thursday, February 24, 2011 at 11:48ambut im not sure can you show me you don't need to tell me the answer

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**Ms. Sue**, Thursday, February 24, 2011 at 11:51amy=1/2x - 1

-3 = 1/2x - 1

Add 1 to both sides of the equation.

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**chloe**, Thursday, February 24, 2011 at 11:54amis it 0 or 2

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**chloe**, Thursday, February 24, 2011 at 11:58amis it

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**drwls**, Thursday, February 24, 2011 at 12:01pmNeither 0 nor 2.

If you do as MsSue suggested, you should get

-2 = (1/2)x

Now double both sides for the value of x

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**chloe**, Thursday, February 24, 2011 at 12:04pmi don't fully understand

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**chloe**, Thursday, February 24, 2011 at 12:10pmwhat sides do i double

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**chloe**, Thursday, February 24, 2011 at 12:13pmits ok i got the answer

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**Ms. Sue**, Thursday, February 24, 2011 at 12:15pmSee -- we knew you could do it! :-)

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