B. 8,000 rpm
The vertex of the parabola represents the maximum value, which in this case is at x=2, y=8. So the maximum rpm of the car is 8,000 rpm.
A car magazine wants to determine the maximum rpm of a car. The following graph shows the equation y=−2x2+8x. The equation represents the function for the rpm of the car in thousands, where the rpm is y and the number of seconds is x.
graph (0,0) (1,6)(2,8)(3,6)(4,0)
The maximum rpm for the car is
A. 6,000 rpm
B. 8,000 rpm
C. 10,000 rpm
3 answers
he axis of symmetry is
A. 2 seconds
B. 3 seconds
C. 4 seconds
A. 2 seconds
B. 3 seconds
C. 4 seconds
A. 2 seconds
The axis of symmetry of a parabola given by the equation y = ax^2 + bx + c is x = -b/2a. In this case, the equation is y = -2x^2 + 8x, so the axis of symmetry is x = -8 / 2*(-2) = 2.
The axis of symmetry of a parabola given by the equation y = ax^2 + bx + c is x = -b/2a. In this case, the equation is y = -2x^2 + 8x, so the axis of symmetry is x = -8 / 2*(-2) = 2.
2 answers