minaricks
02.10.2020 •
Mathematics
Susans weekly earnings were proportional to the number of hours she worked. This table shows the number of hours Susan worked and the anount she earned. How much money did Susan earn per hour ?
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Ответ:
-2x+8=x-1
add 2x to both sides
8=3x-1
add 1
9=3x
divide 3
3=x
sub
y=x-1
y=3-1
y=2
(x,y)
(3,2)