Mathematics: Is x = -4 a valid solution this linear equation? 2x + 9(x - 1) = 8(2x + 2) - 5 No. When -4 is substituted for the variable, the result is a true statement No. When -4 is substituted for the variable, the result is a false statement Yes When -4 is substituted for the variable, the result is a true statement Yes When -4 is substituted for the variable, the result is a false statement Done

Is x = -4 a valid solution this linear equation?

Crull5999

22.01.2022

Yes, -4 is valid.

Step-by-step explanation:

Lets Find out.

So, using substitution:

$2(-4)+9(-4-1)=8(2(-4)+2)-5\\-8-45=8(-6)-5\\-53=-48-5\\-53=-53$

Yes, -4 is a valid solution.

Hope This Helps!

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aaronscott6474

04.01.2023

Step-by-step explanation:

the parabola having (1,5) as vertex have as equation:

y=k*(x-1)²+5

It is passing through (2,8)

8=k*(2-1)²+5 ==> k+5=8 ==> k=3

equation is y=3(x-1)²+5

Answer B

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