Asked by Anonymous
I have been stuck on this problem for a while need help on it and soon. It's functions.
X Rule Y
10 65
30 45
50 25
70 5
I can't find the rule
X Rule Y
10 65
30 45
50 25
70 5
I can't find the rule
Answers
Answered by
Reiny
Did you not notice that for every increase of 20 in the x's there is a decrease of 20 in the y's
so the slope is (45-65)/(30-10) = -1
so y = -x + b
using x=10, y = 65
65 = -10 + b
b = 75
y = -x + 75
so the slope is (45-65)/(30-10) = -1
so y = -x + b
using x=10, y = 65
65 = -10 + b
b = 75
y = -x + 75
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