Math Is Fun Forum

b300y

Member

Registered: 2007-10-17

Posts: 1

algebra

hi i realy realy realy need help the question is y=-o.5x+4

Greg

Guest

Re: algebra

x=8

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: algebra

hi i realy realy realy need help the question is y=-o.5x+4

What do you want to do with that equation?

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Why did the vector cross the road?
It wanted to be normal.

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: algebra

y=-o.5x+4
This is a line that goes in the 2 o'clock direction, sortof.
Take half of x and add 4 to it.
Okay.
Half of 8 is 4 and add 4 to that to get 8 back again.
So...  The line goes through the point (8,8).
Eight Eight is a point 8 right and 8 up from the middle or (0,0), the origin, the center of all graphs, sortof.

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igloo myrtilles fourmis

mikau

Member

Registered: 2005-08-22

Posts: 1,504

Re: algebra

This is a line that goes in the 2 o'clock direction, sortof.d

don't you mean 10 o'clock?

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A logarithm is just a misspelled algorithm.

Khushboo

Member

Registered: 2007-10-16

Posts: 47

Re: algebra

What is that you are trying to find from this equation? Are you trying to estimate the gradient or you want to represent the equation graphically?

Regards

Khushboo