exam Maths Puzzle Numerical Ability

write the equation of the line which has the y intercept 1 and slope -2

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exam Other Question

What is the quadratic function that has a vertex at (-1,-3) and a y-intercept of -4? I think the answer is y=-(x+1)^2-3. Can someone please let me know if I am correct? 4) [-2/(x^2 + 10x + 24)] - [4/(x + 4)]

Subtraction and simplify