Which of the following describes the graph of the function, f(x)=(-x+3)(x-5)
A. opens up and x-intercepts at (-5,0) and (3,0)
B. opens up and x-intercepts at (3,0) and (5,0)
C. opens down and x-intercepts at (-5,0) and (-3,0)
D. opens down and x-intercepts at (3,0) and (5,0)
How do i know whether the parabola opens up or down and how do I determine the x-intercept? Please help, i have a math exam tomorrow.
A. opens up and x-intercepts at (-5,0) and (3,0)
B. opens up and x-intercepts at (3,0) and (5,0)
C. opens down and x-intercepts at (-5,0) and (-3,0)
D. opens down and x-intercepts at (3,0) and (5,0)
How do i know whether the parabola opens up or down and how do I determine the x-intercept? Please help, i have a math exam tomorrow.
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d. when you solve for x the values would be 3 and 5. so the curve cuts the x axis at these points. when you multiply the equation above, -x² + 8x - 15, a<0 so the parabola opens down.