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AfilCa [17]
3 years ago
9

What does set up a proportion and solve mean

Mathematics
1 answer:
alina1380 [7]3 years ago
7 0
Set up fractions and solve them
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Write the equation of the line with a slope of 2 that passes through the points -2,-7 and 5,7
lubasha [3.4K]

Answer:

Therefore the equation of the line through ( -2 , -7 ) and ( 5 , 7 ) is

2x - y = 3

Step-by-step explanation:

Given:

Slope = 2 = m ( say )

Let,

point A( x₁ , y₁) ≡ ( -2 , -7 )

point B( x₂ , y₂) ≡ ( 5 , 7 )

To Find:

Equation of Line AB =?

Solution:

Equation of a line passing through Two points A( x₁ , y₁) and B( x₂ , y₂)is given by the formula,

(y - y_{1} )=(\frac{y_{2}-y_{1} }{x_{2}-x_{1} })\times(x-x_{1}) \\

Or

Equation of a line passing through a points A( x₁ , y₁) and i having slope m is given by the formula,

(y - y_{1} )=m\times(x-x_{1}) \\

Substituting the given values in a above equation we get

(y-(-7))=2\times (x-(-2))\\ \\(y+7)=2(x+2)\\\\(y+7)=2x+4\\2x-y=3\\2x-y=3...............\textrm{which is the required equation of the line AB}

Therefore the equation of the line through ( -2 , -7 ) and ( 5 , 7 ) is

2x - y = 3

8 0
3 years ago
Which of the following expression are equivalent to -45+12?
lora16 [44]

Answer:

Step-by-step explanation:

Please share the possible answer choices next time.  Thanks.

-45 + 12 is equivalent to 12 - 45.

-45 + 12 comes out to -33.

5 0
3 years ago
Write an equation that represents the line. Use exact numbers
aev [14]

Answer:

y= 2/3x + 1.25

Step-by-step explanation:

I can't see the exact number but it's probably 1.25. Sorry if it's wrong :)

5 0
3 years ago
Simplify 7 - (-4) + 3(-6)
jeka94

Answer:

-7

Step-by-step explanation:

7 - (-4)= 11

            +

3(-6)= -18

=-7

8 0
3 years ago
Read 2 more answers
Simplify (9x^8y^3)1/2
Anna35 [415]
The answer is (9x^8y^3)/2.
4 0
3 years ago
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