exam Maths Puzzle Numerical Ability

Find the graphic solution to the following system of equations:
y=2x+5 and y-x=4

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exam Other Question

celsius temperature readings can be converted to fahrenheit reading using the formula F = 9/5C + 32. What is the fahrenheit temperature that corresponds to each of the following celsius temperatures: -10, 0, 15, 100? can someone please solve this one...

use Gauss-Jordan elimination and solve this

3x - y = 5
4x + 2 = 10