Your friend says that the absolute value equation | 3x+8 |-9=-5 has no solution because the constant
on the right side of the equation is negative. Is your friend correct? Explain

Respuesta :

Answer:

Incorrect

Step-by-step explanation:

We are given the equation:

[tex]\displaystyle \large{|3x+8|-9=-5}[/tex]

Add both sides by 9.

[tex]\displaystyle \large{|3x+8|-9 + 9=-5 + 9} \\ \displaystyle \large{|3x+8|=4}[/tex]

When we want to tell if the absolute equation has solutions or not, we have to simplify in this form first: or isolate the absolute sign.

[tex] \displaystyle \large{ |ax + b| = c}[/tex]

If c ≥ 0, the equation has solutions.

If c < 0, the equation does not have solutions.

Therefore, it does not always matter if the constant on right side is in negative because if there is a number on the left side then there is a chance that the equation has solutions.

From |3x+8| = 4 is equivalent |3x+8|-9=-5 and the right side is 4 which is positive.

Hence, the equation does have a solution!