vertex of parabola

Question

select the x coordinate of the vertex of the parabola be defining f(x)=-3x^2+7x+1

Answer 1

Hi Shawna,

 

If you're given a quadratic equation of the form

ax² + bx + c

 

you can find the x-coordinate of the vertex by using the formula

x = -b/2a

 

Your function is

f(x) = -3x² + 7x + 1

 

x = -b/2a

x = -7/2(-3)

x = 7/6