jace9926
24.07.2019 •
Mathematics
What is the slope of the line that contains the points (-1,8) and (5,-4)? a) 2 b)-1/2 c)-2 d)1/2
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Ответ:
Ответ:
-2
Step-by-step explanation:
Ответ:
Step-by-step explanation:
Subtract equation 2 from equation 1
.7x+y-(-1.5x+y)=340-320
.7x+y+1.5x-y=20
2.2x=20
x=100/11, then use this in either original equation to find y.
.7(100/11)+y=340
y=3670/11, so the balance point is
(100/11, 3670/11)