MA 114 - Form B Solutions.pdf - MA 114 Introduction to...

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MA 114 - Introduction to Finite Mathematics Spring 2017 Instructor : Lucas Castle Exam 1 - Form B Solutions 1. [10 points] Find the equation of the line passing through ( 1 2 , 4) that is perpendicular to y = - 1 4 x +1. 1
2. [20 points] Solve the following linear system using the Gauss-Jordan method: 2 x + 4 z = 8 y + 4 z = 3 x - y - 2 z = 1
Notice we can solve for x and y in terms of z to obtain x = - 2 z + 4 y = - 4 z + 3 Thus, we obtain the following solution: z = any number x = - 2 z + 4 y = - 4 z + 3

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