# How do you find the discriminant for #y=x^2-6x+9#?

##### 1 Answer

Mar 5, 2018

#### Explanation:

#"for a quadratic in standard form"#

#•color(white)(x)y=ax^2+bx+c color(white)(x)a!=0#

#"the "color(blue)"discriminant"# is.

#•color(white)(x)Delta=b^2-4ac#

#y=x^2-6x+9larrcolor(blue)"is in standard form"#

#"with "a=1,b=-6" and "c=9#

#rArrDelta=(-6)^2-(4xx1xx9)=36-36=0#