posted by .

Find the coordinates of the midpoint for the following equation: y = -2x^2 + 20x + 1.

Your answer should be in the form (x-coordinate, y-coordinate).

(Hint: Find the x-coordinate by using the Midpoint Formula [-b / (2a)]. Then find the y-coordinate by plugging the x-coordinate value into the original equation and solving for “y.”)
How do I even begin???


    y = -2x^2 + 20x + 1
    I will help with this but for the other two just look at them
    What happens for huge negative x?
    What happens for huge positive x?

    for this one follow directions
    -b/2a = -20/-4 = 5
    that means that the graph of this parabola crosses the x axis equal distance left and right of x = 5
    so your axis of symmetry is x = 5
    Now for the y value of the vertex, just solve using x = 5
    y =-2(5)^2 + 20*5 + 1

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math,algebra II

    can someone show me examples of what is a practical application of matrices or matrix operations that can be used in a real-world situation. Simple example: Coordinate transformation. An object is located at coordinates (x,y,z) in …
  2. finding midpoint

    the midpoint formula is x1 + x2 divided by 2, y1 + y2 divided by two. if the coordinates are x1: a, y1:b and x2: c, y2: 0, what is the midpoint?
  3. Geometry HELP

    A line segment has one endpoint at the coordinate (0, 1) and a midpoint at the coordinate (2, 4). Find the other endpoint. a.)(1, 7) b.)(4, 7) c.)(1, 25)
  4. (act practice)

    In the standard (x,y) coordinate plane, point M with coordinates (5,4) is the midpoint of AB, B has coordinates (7,3). What is the coordinate of A?
  5. math

    A,B are two points on a given line L.L is the midpoint of the section AB. find the coordinate of point B if the coordinate of A=7 and the coordinate of L=4
  6. Math

    Point T is the midpoint of line JH. The coordinate of T is (0, 5) and the coordinate of J is (0, 2). The coordinate of H is: (0, 8) (0, 3) (0, 7) (0, 11)
  7. geometry

    The coordinate of the midpoint of segment AB is (-3, 2). Find the coordinate of A if the coordinate of B is (0, 2). A = (-6,2) (-3/2,2) (3,2)
  8. Geometry, Help

    1. Reasoning How does the Distance Formula ensure that the distance between two different points is positive?
  9. math

    1.A line segment on a number line has its endpoints at -9 and 6 find the coordinate of the midpoint of the segment. Answer choices are A.1.5 B.-1.5 C.2 D.-3 2.find the coordinate of the midpoint of HX given that H(-1,3) and X(7,-1). …
  10. geometry b

    Point T is the midpoint of . The coordinate of T is (0, 4) and the coordinate of J is (0, 2). The coordinate of H is: z

More Similar Questions