Mathematics
17.02.2020 17:39
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What is the solution of this linear system? 4x+y=-1 y= -2x+3
What is the solution of this linear system?
4x+y=-1
y= -2x+3
Show Answers
4x+y=-1
y= -2x+3
summeredki
4,6(84 marks)
(- 2, 7)
Step-by-step explanation:
Given the 2 equations
4x + y = - 1 → (1)
y = - 2x + 3 → (2)
Substitute y = - 2x + 3 into (1)
4x - 2x + 3 = - 1
2x + 3 = - 1 ( subtract 3 from both sides )
2x = - 4 ( divide both sides by 2 (
x = - 2
Substitute x = - 2 into (2) for corresponding value of y
y = -2(- 2) + 3 = 4 + 3 = 7
Solution is (- 2, 7)
brandonholden
4,7(48 marks)
1 is 50 because you have to make sure it adds up to 180. That angle is 130 so 1= 50
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