exam Maths Puzzle Numerical Ability

Do all graphs of linear equations have x-intercepts? Why or why not?

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exam Other Question

The difference between two numbers is 14 and half of their sum is 25. What are the numbers? 1. Plot the graph of the equations 2x - 3y = 6 and 2x + y = -10 and interpret the result.
2. Plot the graph of the equations 2x + 4y = 10 and 3x + 6y = 12 and interpret the result