I need help on figuring out this equation part pls help me
2 answers:
Step-by-step explanation:
its in the picture
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Answer:
f^-1(x) = (x - 4)/3
Step-by-step explanation:
y = 3x + 4
Make x the subject
3x = y - 4
x = (y - 4)/3
Interswitch variables
f^-1(x) = (x - 4)/3
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Answer:
x = 19, y = -5
Step-by-step explanation:
x + y = 14 => x= 14-y
2x + 4y = 18 => 2(x+2y)=18 => x+2y=9
x+2y=9 => (14 - y) + 2y = 9
14 + y = 9 => y = -5
x + (-5) = 14 => x=19
