What is the vertex of y= -3x^2 + 2x − 4?
2 Answers
May 21, 2018
Explanation:
a = -3
b=2
c=-4
vertex is
May 21, 2018
Explanation:
"given the equation in standard form ";y=ax^2+bx+c
"then the x-coordinate of the vertex is"
•color(white)(x)x_(color(red)"vertex")=-b/(2a)
y=-3x^2+2x-4" is in standard form"
"with "a=-3,b=2" and "c=-4
rArrx_("vertex")=-2/(-6)=1/3
"substitute this value into the equation for y"
y=-3(1/3)^2+2/3-4
color(white)(y)=-1/3+2/3-12/3=-11/3
rArrcolor(magenta)"vertex "=(1/3,-11/3)