SOLUTION: If the domain is {0, 2, -6}, what is the range of y = -2x + 3?

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Question 736435:
If the domain is {0, 2, -6}, what is the range of y = -2x + 3?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
If the domain is { 0, 2, -6 } (means all x values ), you will find the range of y+=+-2x+%2B+3 if you substitute x values in given function:

if x=0...=>...y+=+-2%2A0+%2B+3...=>...y+=++3
if x=2...=>...y+=+-2%2A2+%2B+3...=>...y+=-4%2B++3...=>...y+=-1
if x=-6...=>...y+=+-2%2A%28-6%29+%2B+3...=>...y+=12%2B++3...=>...y+=15
so, the range is: { 3, -1, 15 }