Answer:
fart I have a great job and the people whose this movie I don't have to work on that is a great job with your family for a relationship but not in a Philippine language is
Answer:
therefore the value of x = 3 and y = -2
Step-by-step explanation:
using substitution method in solving the following equation
let
y = -x + 1 ........................ equation 1
y= 2x– 8........................... equation 2
substitute for 1 in equation 2 i.e put the value of y in equation 1 to value of y in equation 2
y= 2x– 8........................... equation 2
-x + 1 = 2x - 8
by collecting the like terms
1 + 8 =2x + x
9 = 3x
divide both sides by 3
we have
9/3 = 3x/3
3 = x
therefore x = 3
put x = 3 in equation 1
y = -x + 1 ........................ equation 1
y = -(3) + 1
y = -2
therefore the value of x = 3 and y = -2
to check if your answer is correct
put the value of x and y in either equation one or 2
y= 2x– 8........................... equation 2
-2 = 2(3) - 8
-2 = 6 - 8
-2 = -2 ......................... proved
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Answer:
- to eliminate x: multiply the first by 3, and the second by -4
- to eliminate y: multiply the first by 2, and the second by 5
Step-by-step explanation:
Pick the variable you want to eliminate. Determine the coefficients of that variable in the two equations. Negate one of them. Multiply each equation by the coefficient that came from the other equation.
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<u>To eliminate x</u>
The x-coefficients are 4 and 3. If we negate 4, then the resulting y-coefficient will be positive. We choose to multiply the first equation by 3, the second by -4.
Here is the result of adding those:
3(4x +5y) -4(3x -2y) = 3(7) -4(-12) ⇒ 23y = 69
<u>To eliminate y</u>
The y-coefficients are 5 and -2. If we negate -2, then the resulting x-coefficient will be positive. We choose to multiply the first equation by 2 and the second by 5.
Here is the result of adding those:
2(4x +5y) +5(3x -2y) = 2(7) +5(-12) ⇒ 23x = -46
Answer:
From left to right:
The first one is 2
The second one is 1/2
The third one is 2
The fourth one is 1
Step-by-step explanation:
The scale factor of the dilated is 1/2
