Find the equation of a line which is perpendicular to y = 1/2x - 5 and goes throught the point (0, 0). Write your answer in the form y=mx+c.

y = -2x

Step-by-step explanation:

For a line to be perpendicular to another, it must have the opposite reciprocal slope.  In this case, that means 1/2 becomes -2/1 or -2.  For the line to pass through 0,0 the y intercept must be 0.  Thus the line is y = -2x + 0, or y = -2x

the answer is  

a.

4,624π mm2

step-by-step explanation:

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