Answer:
A & B
Step-by-step explanation:
A&B are your answers since they're the only ones which has negative in their equations for the [tex]x^{2}[/tex] term.
Whereas C is a linear equation and D opens upward since [tex]x^{2}[/tex] is positive.
Hope this helps!
Answer:
A. [tex]y=60x-15x^2[/tex]
B. [tex]y= -(5+2x^2)[/tex]
Step-by-step explanation:
Since, a quadratic function with the negative leading coefficient is always opens downward,
Note :
Leading coefficient : the coefficient (constant value written before a variable) which variable has the highest exponent.
In quadratic function the coefficient before the variable with exponent 2 is leading coefficient,
In [tex]y=60x-15x^2[/tex]
Leading coefficient = -15 ( negative )
⇒ it opens downward,
In [tex]y=-(5+2x^2)[/tex]
Leading coefficient = -2 ( negative )
⇒ it opens downward,
In [tex]y=2x^2-9x+3[/tex]
Leading coefficient = 2 ( positive )
⇒ it does not open downward,
In [tex]y=x^2+4x+8[/tex]
Leading coefficient = 1 ( positive )
⇒ it does not open downward.
