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vladimir2022 [97]
3 years ago
13

Math Plz Help. Please graph with two points! explain how you found your answer

Mathematics
1 answer:
Softa [21]3 years ago
3 0
X intercept: y = 0
y= -3/4x -4
0 = -3/4 x - 4
4= -3/4 x
4 • -4/3 = x
-5.3 = x
y intercept: x = 0
y = -3/4 x -4
y = -3/4 (0) -4
y = -4
the points are (-5.3, 0) and (0, -4)
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6 points
kodGreya [7K]

Answer:

y=-2\,(x+3)^2-3

Step-by-step explanation:

Notice that they are asking you to write the equation of the parabola in vertex form, that is using the coordinates of the vertex (x_v,y_v) in the expression:

y-y_v=a\,(x-x_v)^2\\y=a\,(x-x_v)^2+y_v

we can start by directly replacing the given vertex coordinates (-3, -3) in the expression, and then using the extra info on the point the parabola goes through in order to find the parameter a:

y=a\,(x-x_v)^2+y_v\\y=a\,(x+3)^2+(-3)\\y=a\,(x+3)^2-3\\-5=a\,(-2+3)^2-3\\-5=a\,(1)-3\\a=-5+3\\a=-2

So, now we can write the full expression for the parabola:

y=a\,(x+3)^2-3\\y=-2\,(x+3)^2-3

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3 years ago
This question has three parts. Answer the parts in order.
Whitepunk [10]

Answer:

b

Step-by-step explanation:

b

5 0
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A planet's radius is approximately 1,534 mi. About two-thirds of the planet's surface is covered by water.
borishaifa [10]

Answer:

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Step-by-step explanation:

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X = 40, Y = 15
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Answer:

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Step-by-step explanation:

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