exam Maths Puzzle Numerical Ability

This problem stumped me, because my calculator cannot put in the fraction -3/5 * 2, i know its probaly really easy, but I still dont really know.

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exam Other Question

12. Slope undefined; containing the point (-3, 4)
Write the equation using the general form or the slope-intercept form, whichever you prefer. Graph each line. Can you find three consecutive odd numbers that are prime number?