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krissywatts
 2 years ago
help please i need step by step shown:
the line passing through (2,b) and (4,6) is parallel to the line joining (1,4) and (1,7) find b.
krissywatts
 2 years ago
help please i need step by step shown: the line passing through (2,b) and (4,6) is parallel to the line joining (1,4) and (1,7) find b.

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tomo
 2 years ago
Best ResponseYou've already chosen the best response.1find the slope of each line. set the two sides equal to each other to find b. slope = (y2y1)/(x2x1) using (2,b) and (4,6) (x1,y1) = (2,b) (x2,y2) = (4,6) (6b)/(42) (6b)/2. that is the slope of the line with (2,b) and (4,6) as two points on the line. find the slope of the other line, then post what you get. then we can go from there.

krissywatts
 2 years ago
Best ResponseYou've already chosen the best response.0the other is 74/11= 3/2 so what do i need to do from here?

tomo
 2 years ago
Best ResponseYou've already chosen the best response.1ok, we know that the two lines are parallel, therefore their slopes are equal. set their slopes equal and solve for b. (6b)/2 = (3/2)

krissywatts
 2 years ago
Best ResponseYou've already chosen the best response.0what would the 6b/2 be?

tomo
 2 years ago
Best ResponseYou've already chosen the best response.1you want to cross multiply. (6b)/2 = (3/2) (6b)*(2) = (2*3) 12+2b = 6 2b = 18 b = 9

krissywatts
 2 years ago
Best ResponseYou've already chosen the best response.0oh okay i thought i had to multiply as is im sorry. Thanks.
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