<PRE><B>Question 311066</B>
Determine whether (2,7) is a solution of 6x+9y=20. Is (2,7) a solution of the equation? Please advise. 
Substitute x = 2 and y = 7 to see if you get a true statement:
6*2 + 9*7 = 20
12 + 63 = 20
75 = 20
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Not true; so (2,7) is not a solution of the equation.
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Find the indicated outputs for f(x) =4x^2-4x. 
f(0) = 4*0 -4*0 = 0
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f(-1)= 4(-1)^2 - 4(-1) = 4 +4 = 8
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f(2)= 4(2^2) -4*2 = 4*4 - 4*2 = 8
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Thank you.
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Cheers,
Stan H.</PRE>