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satela [25.4K]
2 years ago
10

The table shows a set of points on a line. What is the y-intercept of the line.

Mathematics
1 answer:
Rom4ik [11]2 years ago
4 0

Step-by-step explanation:

id assume its -5 as the rate of change seems to be zero

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A parabola is represented by the equation y2 = 5x. which equation represents the directrix?
ivann1987 [24]

The value of the directrix is -5/4.

According to the statement

we have given that the equation of parabola is y2 = 5x. And we have to find that the which equation represents the directrix.

We know that the general equation of parabola is

(y - k)2 = 4a(x - h)  -(1)

and given parabola equation is

y2 = 5x.  -(2)

After comparing the both equations we get k=0 and h=0

And the formula to find the directrix is

x = h - a

Substitute the values of h and a in it then

x = 0-5/4

x = -5/4.

Here the directrix is -5/4.

So, The value of the directrix is -5/4.

Learn more about the Parabola here brainly.com/question/4061870

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7 0
1 year ago
The actual length of a soccer field is 500 feet find the percent of error
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3 0
3 years ago
21 less than a number, multiplied by 4, results in 108.Find the value of the unknown number.
Anni [7]

21 - 4x = 108

<em><u>Subtract 21 from both sides</u></em>

-4x = 87

<em><u>Divide both sides by -4</u></em>

x = -21.75

6 0
3 years ago
(b) A line has the equation y = 6x + 11
marin [14]

Hi, to begin, the ordered pair value (-3, 15) has an x-value of -3. So, to see if it lies on the line of your equation y = 6x + 11, plug -3 in for x. This gives you y = 6(-3) + 11 = -7 So the ordered pair answer for this would be (-3, -7) and not (-3, 15). So the answer is no.

4 0
2 years ago
Read 2 more answers
Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?
Llana [10]

Answer:

1. y = 9(x+1/2)^2 -13/4

Step-by-step explanation:

y = 9x^2 + 9x – 1

first isolate the x terms

y = 9(x^2 +x) -1

then add 1/4 inside the brackets to make it a perfect square trinomial (half of the coefficient of the x term squared is how we get 1/4)

since we just added 1/4 we need to subtract what we just added to balance the equation. so 1/4 times 9 is 9/4 ( the number we just added to the equation). then you subtract 9/4 outside of the brackets.

y = 9(x^2 +x +1/4) -1 -9/4

then simplify

y = 9(x+1/2)^2 -13/4

6 0
3 years ago
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