exam Maths Puzzle Numerical Ability

write the equation of a quadratic f(x) such that f(0)=8 and a vertex at x=0.

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exam Other Question

. Find the equation, in slope-intercept form, of the line that passes through the points
(-5, 2) and (-4, 1).

I have no clue how to do this. I tried to understand my textbook and i still dont get it. Please help.
Write the factors for each of the following numbers. 48, 72, 93 and 126.