exam Maths Puzzle Numerical Ability

how can one determine if a word problem can be solved using the Quadratic Equation and why one can determine that?
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exam Other Question

Solve the following system by graphing
2x-y=4
2x-y=6

Equation 1 in slope intercept form:

y-intercept as an ordered pair =>
x-intercept as an ordered pair =>

Equati An objective function is to be maximized given the following constraints: x + 2y <- 4, x - y <- 1, x >- 0, y >- 0. Find the vertices of the set of feasible solutions.

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