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Find The equestion in slope intercept form for the line contaning the two points. (1,1 ) and ( 5,4 )
 2 years ago
 2 years ago
Find The equestion in slope intercept form for the line contaning the two points. (1,1 ) and ( 5,4 )
 2 years ago
 2 years ago

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Mrs.Math101Best ResponseYou've already chosen the best response.0
dw:1326768472676:dw
 2 years ago

Mrs.Math101Best ResponseYou've already chosen the best response.0
you know how to use the equation?
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
that gives the gradient of the line
 2 years ago

EmraBest ResponseYou've already chosen the best response.1
Do You Start With Y1 Or Y2
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
call x_1= 1, y_1 =1, x_2=5, y_2 = 4
 2 years ago

Mrs.Math101Best ResponseYou've already chosen the best response.0
dw:1326768658229:dw
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
the gradient, m is 3/4
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
now you want the equation in the form: y=mx + c
 2 years ago

MohamedDadaBest ResponseYou've already chosen the best response.0
the answer is y = 3/5x 1
 2 years ago

MohamedDadaBest ResponseYou've already chosen the best response.0
i did all my work the answer doesnt show up
 2 years ago

MohamedDadaBest ResponseYou've already chosen the best response.0
no i didnt get emra she's hard to catch o.O
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
you know m = 3/4. Take the first coordinate pair (1,1). Set y=1 and x=1. Then: \[1=3/4 + c\] \[c=1/4\] You can check this value by using the other coordinate pair (5,4) \[4=15/4 + c\] \[c=(1615)/4 = 1/4\] Therefore the equation of your line is \[y=\frac{3}{4}x + \frac{1}{4}\]
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
it's not y=3/5x  1 though...
 2 years ago

MohamedDadaBest ResponseYou've already chosen the best response.0
thats how we learned it
 2 years ago

MohamedDadaBest ResponseYou've already chosen the best response.0
yeah its y = 3/4 x + 1/4
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
you forgot to minus the 1 from the 5 didn't you?
 2 years ago

MohamedDadaBest ResponseYou've already chosen the best response.0
no i wrote the slope wrong .
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
yeah ^^ i remember when I was doing all that geometry was fun, I went to classes drunk for the lols
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
51 is 4, bravo, bravo
 2 years ago

EmraBest ResponseYou've already chosen the best response.1
How would you do this one (8,6 ( and (3,6)
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
y_2  y_1 = 6  6 = 0 x_2  x_1 = 3  8 = 11
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
it's zero yes, what does that mean about the line?
 2 years ago

EmraBest ResponseYou've already chosen the best response.1
?/// thats what i dont get ohh m=0 know we have to see what b=
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
go back to the general equation of a line: \[y=mx+b\] in this case, m=0 so it' just \[y=b\] This tells you that the line is a straight line forever, parallel to the x axis and intersecting the y axis at 6. Now look at your two pairs of coordinates. y is 6 in both (it better be)! So the equation of your line is......?
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
yes \[y=6\] is the equation of your line, it's a very boring graph if you ask me
 2 years ago

EmraBest ResponseYou've already chosen the best response.1
so what the equestions y=0x
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
so it's not in the equation
 2 years ago

EmraBest ResponseYou've already chosen the best response.1
so whats the equestion then is it y=ox
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
remember x is a variable, and is allowed to take all values on the real line, but it obeys the law 0x=0
 2 years ago

EmraBest ResponseYou've already chosen the best response.1
k how would you do this one ( 100,300 ) and (101,299 )
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
do it how you think...
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
y_2y_1 = 299  (300) = 299 + 300 = 1 x_2  x_1 = 101  100 = 1 so it is 1/1 = 1. Your way worked too which is a good thing!
 2 years ago

EmraBest ResponseYou've already chosen the best response.1
so what would the equestion bee y=1x+ ??
 2 years ago

Callum29Best ResponseYou've already chosen the best response.0
use y=x+b and one of your coordinate pairs to solve the equation for b. (Gradient is 1 not 1 by the way).
 2 years ago
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