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Elis [28]
2 years ago
8

the diagram shows graphs of y=1/2x+2 and 2y+2x=12. Use the diagram to solve the simultaneous equations

Mathematics
2 answers:
myrzilka [38]2 years ago
8 0

Answer:

\mathsf {(2.66, 3.33)}

Step-by-step explanation:

\textsf {Given :}

\mathsf {1) y = \frac{1}{2}x + 2}

\mathsf {2) 2y + 2x = 12} \implies \mathsf {y + x = 6} \implies \mathsf {y = -x + 6}

\mathsf{Solving :}

\textsf {Equating the values of y from both equations :}

\implies \mathsf {\frac{1}{2}x + 2 = -x + 6}

\implies \mathsf {\frac{3}{2}x = 4}

\implies \mathsf {3x = 8}

\implies \mathsf {x = \frac{8}{3} \implies {x = 2.66...}}

\textsf {Finding y :}

\implies \mathsf {y = -\frac{8}{3} + 6}

\implies \mathsf {y = \frac{18 - 8}{3}}

\implies \mathsf {y = \frac{10}{3}} \implies \mathsf {y = 3.33...}

\textsf {Graph of equations is attached below.}

OlgaM077 [116]2 years ago
6 0

Answer: (2.67, 3.33)

Explanation:

For the function y = 1/2x + 2

  • y-intercept = (0, 2)
  • x-intercept = (-4, 0)

\hrulefill

For the function 2y + 2x = 12

  • y-intercept = (0, 6)
  • x-intercept = (6, 0)

Draw lines through these coordinates to produce a straight linear graph.

Then see, where they intersect each other. <em>Intersection point</em> : (2.67, 3.33)

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