exam Maths Puzzle Numerical Ability

Solve by graphing. Indicate weather the system is independent, dependant, or inconsistent
4. 2x - 3y = 12
3y - 2x = -12

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exam Other Question

Please help me learn how to use Desartes'Rule of Signs to determine the number of positive, negative, and imaginary roots. An example problem we were given in class is {{{f(x)=x^3+ write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible (-1,3 and (4, -2)