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anonymous

  • one year ago

A man takes a photo of a bridge on holiday. The arch of the bridge in her photograph can be modelled by the equation y = −0.11x 2 + 1.26x + 1.20, where x is the horizontal distance of the inner edge of the bridge from the centre line of the photo, and y is the vertical distance from the bottom of the photo (both measured in cm). (i) Find the y-intercept of the parabola y = −0.11x^2 + 1.26x + 1.20. (ii) (1) Find the coordinates of the point where the line x = 9 meets the parabola.

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  1. Nnesha
    • one year ago
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    y-intercept is a point when line line intersect y-axis when x =0 so to find y-intercept substitute x for 0

  2. Nnesha
    • one year ago
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    y= -.11x isn't a parabola

  3. Nnesha
    • one year ago
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    oh nvm y = −0.11x^2 + 1.26x + 1.20. this is your equation so replace all x's with 0

  4. Nnesha
    • one year ago
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    question ???? understood? or not ? ???

  5. anonymous
    • one year ago
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    yea h so y =1.2

  6. anonymous
    • one year ago
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    what i dont get is the second part

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