plz help i really need this credit and i have no idea what im doing
The slope of diagonal OA is ???? , and its equation is ???
I will post the graph in the comments

- anonymous

- jamiebookeater

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- anonymous

##### 1 Attachment

- anonymous

Answer choices for first blank
A.4/3
B.3/4
C.1

- anonymous

Answer choices for second blank:
A.4x-y=0
B.x-3y=0
C.4x-3y=0

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## More answers

- welshfella

count the units from point A straight down to the x axis
then count from this point on the x axis left to the 0
slsope = first count / second

- welshfella

|dw:1437053596264:dw|

- welshfella

the slope = y / x

- anonymous

so B. 3/4?

- anonymous

but the how do you find the equation?

- welshfella

no its not 3/4
check again

- welshfella

its the vertical distance / horizontal distance
- sometimes called rise/run

- anonymous

A.4/3

- welshfella

right

- anonymous

cool thanks now i just need to find the equation

- welshfella

the general form for a straight line is
y = mx + b
where m = slope (which we have just found) and b = intercept on the y-axis

- welshfella

|dw:1437054098723:dw|

- welshfella

in your case the intercept is at 0
so we have y = (4/3) x + 0 = (4/3) x

- welshfella

now you need to get rid of the fraction 4/3 so to get it into one of the forms in the choices Can you do this?

- welshfella

|dw:1437054276881:dw|

- anonymous

im alittle confused

- welshfella

can you see how we got the above equataion?

- anonymous

yes

- welshfella

h = mx + bb and m = 4/3 , b = 0

- welshfella

Ok so to get rid of the fraction 4/3 we multiply each term by 3

- welshfella

|dw:1437054456654:dw|

- welshfella

note they have 4x - 3y = 0
we get this from our equation by subtract 3y from both sides of the '='
3y - 3y = 4x - 3y
4x - 3y = 0

- welshfella

this is stand form - the x term first then the y term and the number after the =

- welshfella

* standard form

- anonymous

Thank you you helped me so much

- welshfella

yw

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