# maths

posted by .

this is urgent
y=1/2x - 1
if x equals 4 what does why equal?

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y = [(1/2) * 4] - 1
y = 2 - 1
y = 1

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thankyou so much i find them very hard

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You're welcome.

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sorry can i ask you one more question related to that one if y=-3 what is the value of x

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I showed you how to do the first one. You try this one; I'll be glad to check your answer.

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but im not sure can you show me you don't need to tell me the answer

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y=1/2x - 1

-3 = 1/2x - 1

Add 1 to both sides of the equation.

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is it 0 or 2

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is it

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Neither 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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i don't fully understand

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what sides do i double

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its ok i got the answer

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See -- we knew you could do it! :-)

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