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valkas [14]
3 years ago
9

Which of the following equations shows direct variations a) y= x/3 + 1 B) y= 3x c) Y=3/x

Mathematics
1 answer:
Korolek [52]3 years ago
7 0
A) Not a direct variation since it is not in the form y = k*x
B) is a direct variation since it is in the form y = k*x where k = 3
C) Not a direct variation. This is an inverse variation since it is in the form y = k/x

Answer: Choice B only
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Find the x-intercepts of the parabola with vertex (5,-4) and y-intercept (0,96). Write your answer in this form: (x1,y1),(x2,y2)
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Answer:

The x-intercepts are

(x1,y1)=(4,0)

(x2,y2)=(6,0)

Step-by-step explanation:

we know that

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we have

the vertex is the point (5,-4)

substitute

(y+4)=a(x-5)^{2}

The y-intercept is the point (0,96)

substitute and solve for a

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100=a(25)

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The equation of the vertical parabola is equal to

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Remember that

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Simplify

1=(x-5)^{2}

Rewrite

(x-5)^{2}=1

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3 years ago
Evaluate. -|-7 + 3| <br> 4<br> -4<br> -10
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Then you add those together and when you add a negative to a positive you basically subtract

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A is your answer
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