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Lina20 [59]
3 years ago
12

Find the equation of the axis of symmetry for this function.

Mathematics
1 answer:
nalin [4]3 years ago
3 0

Answer:

x = 1

Step-by-step explanation:

Given a parabola in standard form

f(x) = ax² + bx + c ( a ≠ 0 )

Then the equation of the axis of symmetry is

x = - \frac{b}{2a}

f(x) = 4x² - 8x + 5 ← is in standard form

with a = 4 and b = - 8 , then equation of axis of symmetry is

x = - \frac{-8}{8} = 1

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Find the equation of a line perpendicular to -4x+y=10 that passes through the point (-4,9)
Oliga [24]

Answer:

y=-1/4x+8

Step-by-step explanation:

To find the equation of a line that is perpendicular to a line, you would take the opposite reciprocal of the slope.

Before that, we need to change the equation into slope-intercept form.

-4x+y=10

y=4x+10

The opposite reciprocal of the slope is -1/4.

Now, let's use the point-slope formula to find our equation of the line that passes through (-4,9).

y-y1=m(x-x1)

y-9=-1/4(x-(-4))

y-9=-1/4x-1

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4 0
3 years ago
What is the perimeter of rectangle that has a width of 11 and a length of 25?
devlian [24]

Perimeter = 2l + 2w

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2 * 11 = 22

22 + 50 = 72

The perimeter is 72.

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3 years ago
What is the answer to the value of y -1y + 11 - 20 is it 3 or -3
Tom [10]

Answer:

-9

Step-by-step explanation:

1y+11=20

   -11=-11

-1y=20-11

-1=9

-9

7 0
3 years ago
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Answer:

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