Algebra

Question 1

Solve (x-3)(x+5) = 0

Answer 1

x = 3 or x = -5

Question 2

Complete a table of values for integer values -4 < x < 4 and plot the function y = x² - 4x - 5 on a set of axes.

Answer 2

Question 3

Solve 5x + 2y = 10

        7x - 2y = 20

Answer 3

x = 2.5

y = -1.25

Question 4

Solve 3x² - 7x + 1 = 0.

Give your answer to 2 decimal places.

Answer 4

x = 2.18 or x = 0.15

Question 5

What is the equation of the graph?

Answer 5

y = x³

Question 6

Draw a graph to represent x² + y² = 16

Answer 6

The red circle.

Question 7

Below is the graph y = x².

Show what the graph y = x² - 3 looks like.

Answer 7

Question 8

Set up an equation and solve to work out the value of x and y.

Answer 8

x = 29^o

y = 89^o

Question 9

Use trial and improvement to solve x³ + 2x = 56.

Give your answer to 1 decimal place.

Answer 9

3.7