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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.
 one year ago
 one year 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.
 one year ago
 one year ago

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tomoBest ResponseYou've already chosen the best response.1
find 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.
 one year ago

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

tomoBest ResponseYou've already chosen the best response.1
ok, 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)
 one year ago

krissywattsBest ResponseYou've already chosen the best response.0
what would the 6b/2 be?
 one year ago

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

krissywattsBest ResponseYou've already chosen the best response.0
oh okay i thought i had to multiply as is im sorry. Thanks.
 one year ago
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