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anonymous
 one year ago
What is the equation of a line that passes through points (0, 4) and (4, 8)?
y = 2x + 4
y = 2x  4
y = 3x + 4
y = 3x  4
anonymous
 one year ago
What is the equation of a line that passes through points (0, 4) and (4, 8)? y = 2x + 4 y = 2x  4 y = 3x + 4 y = 3x  4

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Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0first find the slope \[\huge\rm m=\frac{ y_2y_1 }{ x_2x_1}\] substitute x's and y's by their value

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0\[\large\rm (x_1 ,y_1)(x_2,y_2)=(0,4)(4,8)\] x's and y's

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439993754267:dw now substitute x's and y's by their values remember first number in order represent xcoordinate so find sole fist \[\huge\rm m=\frac{ y_2y_1 }{ x_2x_1}\] substitute x's and y's by their value

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0slope intercept form is \[\huge\rm y=\color{reD}{m}x+b\] where m is slope and b is yintercept first we have to find m value

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439994011436:dw here now replace x's and y's by their valeus

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439994152620:dw that's how you have to substitute variables by their numbers

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ydw:1439994209239:dw

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439994289089:dw y_2 means 2nd y

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0now solve that fraction

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439994310600:dw

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0\[\huge\rm \frac{ 84 }{ 40 } = ???\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439994506801:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439994601702:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439994643265:dw

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0no it's not equal to 4 pay attention!!

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0so 84 = ?? remember you should add them
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