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which question ?!
remember to find the y intercept look where the line intercets the y axies
all of them
can you help me with y intercept the slope and the equation though
Slope = (-2/3) Y-int = 2 Equation : "y = (-2/3)x + 2"
for the first one?
can you do the second one
no this is no.4
Ok, i'll solve you the second one
can you solve 1-4?
No, you have to do them by yourself....i'm just helping.
i'll solve the second
2- Slope = 1 Y-int = 0 Equation: y=x
how did you do it?
as you can see, the st.line is passing throw (0,0) this means that the y-int = 0 So the equation is "Y = aX" choose any two points on the graph and substitute with them in the equation let it be (2,2) for example: 2 = a * 2 so a = 1 so the equation is : "y = x"
can I solve one then see if I get it right?
yeah , sure
wait the y-int that I learned was you always have to put 0 then the number
is the answer 1, (0,1), y=x+1?
for number 1
No, that's wrong answer
you can get they y-int by letting x=0
y-int is the point of intersection between the St.line and the y-axis
is the slope correct?
what is not correct?
ohh I see
no it's not
is the slope -4, the y-int (0, 3 1/2), and the equation y=-4x+ 3 1/2?
actually , the graph is not so clear , so i considered the y-int as (0,3)
is everything else correct?
the answer of no 1 will be: Y-int = (0,3) Slope = -3 Equation : "y = -3x+3" *of course this answer is by considering the y-int is 3 not 3.5 or else
let's keep going!
will you solve it ?!
and you can check
Ok, go on
can you tell me the answer so I can check?
no , you tell me your answer
slope is 1 y-int is (0,-2) equation is y=1x-2
you got the y-int right, but you mistaken the slope
it's rise over run
nope I haven't
how do you do slope? cause I know it's rise over run?
yes it's, but in mathematical words...it's change y over the change of x so you just pick any two points e.g : (1,0) & (0,2) [i chose them to only ease the calculations] so the slope = (\[(2-0) \over (1-0) \] which is equal to -2
sorry it's (0-2) not (2-0)
is that the answer to number 3 for the slope or is that an example?
yes it's for no. 3
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