Sorry - P7 Algebra Question

timbim_2

vyseyboy wrote: »

Yep, is it:

y ≥ -5

y ≤ -5

??

If so, y = -5

Very faulty logic. y is greater than, equal to and less than -5, so is the range of all numbers. The statements do not restrict the range at all.

vyseyboy

timbim wrote: »

Very faulty logic. y is greater than, equal to and less than -5, so is the range of all numbers. The statements do not restrict the range at all.

≥ means greater than or equal to, and ≤ means less than or equal to.

so if y is greater than or equal to -5 AND y is less than or equal to -5, then y = -5.

That's assuming that:

y ≥ -5
y ≤ -5

are two rules that are obeyed at once.

However, if the symbols don't have lines under them, i.e. the two conditions are:

y > -5
y < -5

Then you have a trick question, and there is no answer that fits the conditions.

fletch3163

Thanks for all your responses.

It's not got a _ under the < or >

It's 2 separate sums and they go like this:

In this question you must choose y only from the numbers, !!-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5}

y > 2
Y< 1
Y> -1
y > -5
y < -5

There's a couple of same as or < > but I can't type them

My if I can only choose from that range, then surely y can't be both more than and less than -5 or am I STILL being daft?:o This is not doing my self esteem any good. Why did I stop boozing again?

samhale

Isn't it just a value of y for each statement? Each diferent?

juno

Don't you just pick which numbers from the list obey that property? So for y is bigger than -5 that's all of them except -5, and for less than it's none.

fletch3163

Do you know what juno? I never thought of NONE being an answer. I was just so caught up in the two questions being contradictory.

Yep samhale for each one it's the value of "y" so they're all different. Am I THAT stupid do you think?

samhale

Ohhh

In this question you must choose y only from the numbers, !!-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5}

y > 2 - y= 3
Y< 1 y = 0
Y> -1 y = 1
y > -5 y = -3
y < -5 - can';t be any.

VfM4meplse

Might it just be a misprint? I loved algebra but this so called q is a wste of time!

fletch3163

So, rather than choose ALL answers less or more than the number I (DS) just choose the nearest number? What was I doing in class all those years ago? Hands over ears I reckon. If this is me at P7, imagine my when he gets to high school. And there's me getting all dramatic about glottal stops and apostrophes:rotfl:

vivaladiva

My DD who did maths GCSE this year, looked at this question and commented that trick questions are the norm, as are questions with more than one answer and errors in the textbooks:eek:.