book Maths Puzzle Numerical Ability

find an equation fr the linear funtion f.

f(x)= -4 f(x)= -5

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book Other Question

i need help with this inequality:

3x-5<2 {integers}

when i tried this problem i +5 to both sides so the 5 would cancel out and then i divided 3x on both sides then i c How do you find the degree of an angle?