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**Simultaneous Equations: Quiz 3 - Answers**1)

*x*= -2.4 to -2.2,*y*= -1.7 to -1.5*x*= 1.2 to 1.4,*y*= 5.5 to 5.72)

*x*= 0.2 to 0.4,*y*= 1 to 1.2*x*= 1.6 to 1.8,*y*= -3.2 to -33)

*x*= -2.2 to -2,*y*= 0.8 to 1*x*= -0.5 to 0.3,*y*= 1.7 to 1.9*x*= 2.4 to 2.6,*y*= 3.2 to 3.4**Working**

**Questions**

Solve the simultaneous equations by using the graphical method. Give your answers to 1 decimal place. You may use a calculator. Click here for a printable version of the graphs for the questions in this quiz.

1) *y* = *x*^{2} + 3*x*

*y* = 2*x* + 3

2) *y* = 2*x*^{2} – 7*x* + 3

*y* = -3*x* + 2

3) *y* =* x*^{3} – 5*x*

*y* = ½ *x* + 2