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WITCHER [35]
3 years ago
9

Substitute for y and rewrite the system of equations as a single equation which can be used to solve for x.

Mathematics
1 answer:
Vlada [557]3 years ago
7 0

Answer:

x = 3  and y = 1

Step-by-step explanation:

Given equations

y=3x-8 and y=4-x

We will substitute y from second equation in the first and get:

4-x = 3x-8   first we will add (+x) to both sides and get

4-x+x = 3x+x-8 =>   4 = 4x-8 now we will add (+8) to the both sides and get

4+8 = 4x-8+8 => 12 = 4x  now we will change the sides of equation and get

4x = 12 => x = 12/4 = 3 => x=3  now we will replace x=3 in the second equation

y= 4-x = 4-3=1 => y=1  

Finally we have  (x , y) = ( 3 , 1)

God with you!!!

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Answer:

Step-by-step explanation:

since you are given two points use the point- slope formula and the slope formula

y-y1 = m( x -x1)   and  m = y2 -y1 / x2 - x1        

find the slope m, 1st

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m = -6-(-2) / -4-(-8)

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m = -4 / 4

m = -1  :)

now use the slope you just found and the point-slope with either given point.. pick one.. which ever seems easier... they seem about the same to me

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3 years ago
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Step-by-step explanation:

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3 years ago
true or false in deductive thinking you start with a given set of rules and conditions and determine what must be true as a cons
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Step-by-step explanation:

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