Question

Can someone show me the equation to get x?

Answer 1

hello?

Answer 2

To arrive at a possible solution (which would have to be verified before acceptance), I've made some assumptions: 1) that the two lines connecting Q and S and R and T cross at right angles to each other

If and only if that's the case, then y=x+3, and, similarly, 3x+2=y+1.

Answer 3

haha it's easier (for me anyway) if you post a pdf or screen shot

Answer 4

Did they say if the figure is a rhombus ?

Answer 5

Okay :) I know the answer is 1 I just dontknow how to get the answer

Answer 6

Try solving these two equations for x. Then find y. You'll still need to check whether your x and y "solve" the figure.

Answer 7

Yes the figure is a rhombus. I just dont know how to set up the equation s to find x or y

Answer 8

phi could ASSUME that the figure is a rhombus and proceed accordingly.

@Hahawowoh : So, the problem statement says that the figure is a rhombus? If so, I'm wondering why you didn't share that info with the rest of us up front.

Answer 9

I though you'd know aha

Answer 10

listen I just need help with the equation

Answer 11

This is not a "haha" matter. It cost me time trying to make reasonable assumptions so that we could get started solving this problem. And I don't like your attitude as expressed in "listen I just need help with the equation." A man would apologize.

Answer 12

I have already given you hints regarding how to solve this problem. That's as far as I'm going to go.

Answer 13

You would look up what the properties of a rhombus are.
see http://www.mathsisfun.com/geometry/rhombus.html

Answer 14

the property you need to know is that the diagonals bisect (i.e. divide into two equal halves) each other

that means you can write down two equations (one for each diagonal)
can you try to do that ?

Answer 15

3x+2=y+1

Answer 16

ok, and the other one (other diagonal) ?

Answer 17

y=x+3

Answer 18

so you have 2 equations and 2 unknowns. If you have an equation for each unknown (and we do here), you can solve for the unknowns.

there are two techniques: elimination and substitution

Answer 19

3x+2=y+1
y=x+3

as a rule elimination is more systematic (I would use for more than 2 variables)
but in this problem notice that you know y is the same as (x+3) (2nd equation)
so in the first equation erase the y and put in x+3 instead
what is the new equation after you do that ?

Answer 20

3x+2=x+3+1

Answer 21

yes, now you "combine like terms"
for example 3+1 is easy you get
3x+2= x+4

I would next add -2 to both sides: write -2 on each side, then simplify
can you do that ?

Answer 22

Yes, you would get 2x=2 then divide to get 1! thank you so much!!

Answer 23

yes

Answer 24

can yo u please help with the Y?

Answer 25

y=x+3 so if x is 1 then y would be 4! i got it!

Answer 26

look at the 2nd equation
y= x+3

you know x is 1, so you can figure out y

Answer 27

Thank you sosososososo much :)

Answer 28

you could also use the first equation and "solve for y"
but sometimes it's obvious that one equation is easier to use than the other

Answer 29

and if you want to check your answer, you can try x=1 and y=4 in both equations, and both will "work"
for example:
3x+2=y+1
3*1+2 = 4+1
3+2= 4+1
5=5
it works