Respuesta :
Answer:
-3 ?
Step-by-step explanation:
idk if thats right but i just plugged in 3 to x and solved from there
As per quadratic equation, the value of 'y' for [tex]x = 3[/tex] is 0.
What is a quadratic equation?
"A quadratic equation is an algebraic equation of the second degree in 'x'. The quadratic equation in its standard form is [tex]ax^{2} + bx + c = 0[/tex], where 'a' and 'b' are the coefficients, 'x; is the variable, and 'c' is the constant term."
Given quadratic equation is:
[tex]y = x^{2} -2x - 3[/tex]
When [tex]x = 3[/tex], the value of 'y' is:
[tex]= 3^{2} -2(3) - 3\\= 9 - 6 - 3\\= 0[/tex]
Learn more about quadratic equation here: https://brainly.com/question/2263981
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