A model is made of a car. the car is 9 feet long and the model is 6 inches long. what is the ratio of the length of the ar to th
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Answer:
y = - (x - 1)² + 2
Step-by-step explanation:
Any point (x, y) on the parabola is equidistant from the focus and the directrix.
Using the distance formula
= | y - 6 |
Square both sides
(x - 1)² + (y + 2)² = (y - 6)² ( expand the factors in y )
(x - 1)² + y² + 4y + 4 = y² - 12y + 36 ( subtract y² - 12y from both sides )
(x - 1)² + 16y + 4 = 36 ( subtract 4 from both sides )
(x - 1)² + 16y = 32 ← subtract (x - 1)² from both sides )
16y = - (x - 1)² + 32 ( divide all terms by 16 )
y = - (x - 1)² + 2
I assume by the length you mean height so,
≈ <span>4.54.
if you're supposed to round it, it'd be either 4.50, or 5
</span>
I hope this helps
if you're supposed to round it, it'd be either 4.50, or 5
</span>
I hope this helps