delanorpalmer24
21.12.2019 •
Mathematics
The points (3,-2) and (7,r) lie on a line with the slope 3/4. find the missing coordinate r.
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Ответ:
the answer is 1
Step-by-step explanation:
X1=3 X2=7
Y1=-2 Y=r
M=y2-Y1/X2-X1
3/4=r-(-2)/7-3
3/4=r+2/4
Cross multiply
4(r+2)=4*3
4r+8=12
collect like terms
4r=12-8
4r=4
divide the by the co efficient of x
r=1
Ответ: