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vodka [1.7K]
3 years ago
7

Indicate in standard form the equation of the line passing through the given point and having the given slope. R(4, 0), m = 5

Mathematics
2 answers:
Sergio039 [100]3 years ago
5 0
5x + -1y = 20
You can simplify it to 5x-y=20
adoni [48]3 years ago
3 0

Answer:

5x-y=20

Step-by-step explanation:  

We are asked to find the standard form of the equation of line, which passes through point R(4,0) and having a slope of 5.

First of all, we will write equation of line in point-slope form:

(y-y_1)=m(x-x_1), where,

m=slope of line,

(x_1,y_1) = Coordinates of point that lies on the line.

Upon substituting our given values in point-slope form of equation we will get,

(y-0)=5(x-4)

Now, we will convert our equation into standard form of equation:ax+by=c

Upon using distributive property we will get,

y=5x-20

Now we will subtract 5x from both sides of our equation as:

-5x+y=5x-5x-20

-5x+y=-20

Upon multiplying our equation by -1, we will get,

5x-y=20

Therefore, our required equation would be 5x-y=20.

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Is the difference between two negative numbers numbers is always negative.
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4 0
3 years ago
A. Show that the vector v = ai + bj is perpendicular to the line ax + by = c by establishing that the slope of v is the negative
pishuonlain [190]

Answer:

Part A:

m_1m_2=-1

\frac{b}{a}(\frac{-a}{b})=-1\\-1=-1

Hence proved that Vector= ai + bj is perpendicular to the line ax + by = c.

Part B:

Slope of vector = \frac{b}{a}

Step-by-step explanation:

Condition for perpendicular is:

m_1m_2=-1

Part A:

Consider the vector v = ai + bj

x component of vector=a

y component of vector=b

Slope of vector=m_1=\frac{y}{x}=\frac{b}{a}

Consider the line ax + by = c:

Rearranging the equation:

ax+by=c

by=c-ax

y=\frac{-ax}{b}+\frac{c}{b}

According to general equation of line: y=mx+c

Where m is the slope

In our case the slope of above line is:

m_2=\frac{-a}{b}

According to the condition of perpendicular:

m_1m_2=-1

\frac{b}{a}(\frac{-a}{b})=-1\\-1=-1

Hence proved that Vector= ai + bj is perpendicular to the line ax + by = c.

Part B:

Slope of vector is also calculated above.

Since the slope of vector is negative reciprocal of the slope of the given line:

According to equation of line ax + by = c

y=\frac{-ax}{b}+\frac{c}{b}

According to  general equation of line: y=mx+c

Where m is the slope

Slope of given line=m=\frac{-a}{b}

negative reciprocal of the slope of the given line = \frac{b}{a}

Slope of vector = \frac{b}{a}

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3 years ago
I know this might be a easy answer but with proper algebra format a chicken has two legs a dog has 4 legs the chicken must have
Rom4ik [11]

Step-by-step explanation:

Let each let of chicken be C and dog be D respectively.

Then as per question

2C+4D = 28.......i

and

C-D =14........ii

These are the two algebraic equation which you are looking for solve them

to get the answer

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3 years ago
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