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Dovator [93]
3 years ago
14

5y-30=-5y+30 and also can you show the steps :}

Mathematics
1 answer:
KatRina [158]3 years ago
8 0

5y-30=-5y+30

add 30 to both sides

5y = -5y+60

add 5y to both sides

10y = 60

divide both sides by 10

y = 6

<em>hope this helps!</em>

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Answer:

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b. y-intercept = (0,-6)

c. x-intercept = (6,0) ; (-1,0)

Step-by-step explanation:

a.

Your equation is written as:

y = ax^{2} + bx +c

The easiest way to find the vertex is writing the equation this way:

y = a(x-h)^{2}+k

Being the vertex (h,k)

So first complete the square

y = x^{2} -5x -6 \\y = x^{2} - 2(2.5x) -6 \\y = x^{2} - 2(2.5x) +2.5^{2} - 2.5^{2} -6 \\y = (x^{2} -2(2.5x) + 2.5^{2}) -6.25 - 6 \\y = (x-2.5)^{2} -12.25

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b.

To find the y-intercept you need to replace the equation when x = 0 and get y

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c.

To find the x-intercept you need to replace the equation when y = 0 and get x

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