Mathematics
Lisandra961
20

the slope of a line is 3/2 and the line contains the points (5,9) and (3, a). what is the value of a?

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(1) Answers
latinaberryhill

y = mx + b slope(m) = 3/2 (5,9)...x = 5 and y = 9 now we sub and find b, the y int 9 = 3/2(5) + b 9 = 15/2 + b 9 - 15/2 = b 18/2 - 15/2 = b 3/2 = b so ur equation is : y = 3/2x + 3/2.........(3,a)....so x = 3 y = 3/2(3) + 3/2 y = 9/2 + 3/2 y = 12/2 y = 6 so ur missing value is 6...a (or y)  = 6

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