exam Maths Puzzle Numerical Ability

Graph the linear system and estimate the solution. Then check
the solution algebraically.
20. 2x + y = 13
5x - 2y = 1

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exam Other Question

the difference of two numbers is 19 the larger number is 3 more than twice the smaller. find the numbers USe slopes to show that the square with vertices at (-2,5), (4,5), (4,-1) and
(-2,-1) has diagonals that are perpendicular