phantoms14
phantoms14 phantoms14
  • 13-05-2021
  • Mathematics
contestada

Using a graphical method, solve the simultaneous equations x+y =4 and y=2x+1

Respuesta :

abidemiokin
abidemiokin abidemiokin
  • 18-05-2021

Answer:

(1, 3)

Step-by-step explanation:

Given the expression

x+y = 4 ... 1

y = 2x+1 ....2

Substitute equation 2 into 1

x + (2x+1) = 4

3x + 1 = 4

3x = 4-1

x = 3/3

x = 1

Since y = 2x + 1

y = 2(1) + 1

y = 3

Hence the solution to the equation is (1,3). This means that the coordinate point on the graph where both lines intersect will be at (1, 3)

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