exam Maths Puzzle Numerical Ability

find slope and y-intercept
y = 5x- 4

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exam Other Question

the sum of two consecutive integers is less than 75.find the pair ofintegers with the greatest sum. i need help with this question i have no idea how to beging to solve it.

it says : subtract the lower polynomial from the upper one

2x^2y-5xy^2+2 and