Substitute y = 4 into the following equation: 4x + 2y = 52. What is the value of x?
x = 11
x = 10
x = 9
Two simultaneous equations are given as 2x + y = 5 and 3x + y = 7. Find the value of x and y.
x = 1, y = 2
x = 2, y = 1
x = 1, y = 1
Two simultaneous equations are given as: 6x - 2y = 15 and 4x + 3y = -3. Which of the following can NOT be used to solve the equations?
12x - 4y = 30 and 12x + 9y = – 9
12x - 6y = 36 and 4x + 6y = 3
18x - 6y = 45 and 8x + 6y = – 6
Two sandwiches and a juice cost £3.40. Four sandwiches (s) and three juices (j) cost £7.20. Which simultaneous equations show this information?
2s + 4s = 3.40 and j + 3j = 7.20
2s + j = 7.2 and 4s + 3j = 3.4
4s + 3j = 7.2 and 2s + j = 3.4
Two sandwiches and a juice cost £3.40. Four sandwiches and three juices cost £7.20. What is the cost of a juice?
£0.50
£0.40
£0.30
Two sandwiches and a juice cost £3.40. Four sandwiches and three juices cost £7.20. What is the cost of a sandwich.
£1
£1.25
£1.50
Two simultaneous equations are given as y = x + 4 and y = x2 + 4x. Which of these are NOT a solution point for the equations?
x = -1 and y = 3
x = -4, y = 0
x = 1, y = 5
Look at the diagram below. What is the solution point for the graph?
x = 2, y = 4
x = 3, y = 5
How can you rearrange 4x + 2y = 6 into the form y = mx + c?
y = -2x + 3
y = 2x + 3
y = 4x + 6
Two graphs are given as y = 0.5x and y = 2x - 6. Either by plotting the graphs or otherwise, find the values of x and y. The first graph is plotted for you on the diagram below.
x = -4, y = 2
x = 4, y = 2
x = 4, y = -2