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3 years ago

Comeplete the equation of the line whose slope is -2 and y-intercept is (0,-8)

Mathematics

2 answers:

ira [324]3 years ago

8 0

When you write the equation of a line in the form

$y=mx+q$

then $m$ is the slope, and the y-intercept is $(0,q)$

So, if you want slope 2 and y-intercept (0, -8), your line is

$y=-2x-8$

Annette [7]3 years ago

6 0

Answer:

y = -2x - 8

Step-by-step explanation:

The formula for a slope line is

y = mx + b

"m" is the slope that's given in the problem, and b is simply the y value of the y-intercept, which is also given.

I hope this helps!

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Find an upper limit for the zeroes 2x^4 -7x^3 + 4x^2 + 7x - 6 = 0

erik [133]

<u>Answer-</u>

2 is the upper limit for the zeros.

<u>Solution-</u>

The given function f(x) is,

$2x^4 -7x^3 + 4x^2 + 7x - 6 = 0$

For calculating the zeros,

$\Rightarrow f(x)=0$

$\Rightarrow 2x^4 -7x^3 + 4x^2 + 7x - 6 = 0$

$\Rightarrow 2x^4-4x^3-3x^3+6x^2-2x^2+ 4x+3x-6=0$

$\Rightarrow 2x^3(x-2)-3x^2(x-2)-2x(x-2)+3(x-2)=0$

$\Rightarrow (x-2)(2x^3-3x^2-2x+3)=0$

$\Rightarrow (x-2)(x^2(2x-3)-1(2x-3))=0$

$\Rightarrow (x-2)(x^2-1)(2x-3)=0$

$\Rightarrow (x-2)(x+1)(x-1)(2x-3)=0$

$\Rightarrow x-2=0,\ x+1=0,\ x-1=0,\ 2x-3=0$

$\Rightarrow x=2,\ x=-1,\ x=1,\ x=\frac{3}{2}$

From all the 4 roots, it can be obtained that 2 is the greatest zero.

7 0

2 years ago

The plot shown below describes the relationship between students' scores on the first exam in a class and their corresponding sc

DiKsa [7]

Answer: y=x estimate: 88

Step-by-step explanation:

5 0

3 years ago

Assume the average cost of maintaining a dog is the same from month to month. After 55 months, the dog had cost you a total of $

Marizza181 [45]

Answer:

Originally, you will <em>pay</em> $95.75 for the dog.

Step-by-step explanation:

Given:

Maintenance cost of dog after 55 months = $5,468.50

Maintenance cost of dog after 82 months = $8,053.75

To Find:

How much did you pay for the dog originally = ?

Solution:

It is stated that the maintenance cost is same from month to month

Now 82 - 55 = 27 months

For 27 we have paid

$8,053.75 - $5,468.50

$2585.25

But one month the amount paid will be

$\frac{2585.25}{27}$

7 0

3 years ago

I need answers 1-4. i don’t understand how to figure out the answers

klasskru [66]

answersssssssssssssss to ?

8 0

3 years ago

Which situation can be represented by the equation y = 12 x ?

Marat540 [252]

Answer:

Let's solve for x.

y=12x

Step 1: Flip the equation.

12x=y

Step 2: Divide both sides by 12.

12x /12 = y /12

x= 1 /12 y

Answer: x= 1 /12 y

Step-by-step explanation: Hope this helps :D

5 0

2 years ago