1. Solve the following algebraic equations using graphical methods: •The simultaneous equations for values of x and y: x + y = 5 y = 2 + 3x • The quadratic equation for x: x2 – 5x + 4 = 0 2. Explain...

1. Solve the following algebraic equations using graphical methods:

•The simultaneous equations for values of x and y:

x + y = 5

y = 2 + 3x

• The quadratic equation for x: x2 – 5x + 4 = 0

2. Explain what standard deviation is and how it can be used to monitor the quality of manufactured materials.