exam Maths Puzzle Numerical Ability

Find k so that the line through (4,-1) and (k,2) is
a. parallel to 2x + 3y = 6
b. perpendicular to 5x - 2y = -1

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exam Other Question

Please help to describe the location of the point at (1,3) in the coordinate plane. Draw a graph and place the point on the graph. having a difficult time with finding the answer to a - 8 = 23? how do i solve a? and 13 + z = 6 how do I solve for z