Graphical solution of Linear and Quadratic Equation 1 & 2

Drawing Quadratic Graphs

Quadratic Graphs Part 2

Exercise:

Using a scale of 1 cm for 1 unit on the x axis 1cm for 10 units on the y-axis draw the graph of y = 2x² – 9x + 4 from x = -5 to x = 5

Use your graph to solve the following equations

• 2x² – 9x + 4 = 0 (b)                   2x²  – 9x + 7 = 0