exam Maths Puzzle Numerical Ability

can someone hlep me with this problem:

What is the slope of the line that passes through (-4,-2) and the origin ?

a. m = 1/2
b. b = 1/2
c. m = -1/2
d. Insufficient imformation given

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exam Other Question

Given the standard form for a conic section.

{{{{ax^2+by^2+cxy+dx+ey+f=0 and the values a=-5 b=0 c=0 d=16 e= -4 f= -12}}}}
Rewrite the equation in standard quadratic form. Divide.

8x to the 3rd power - 6x squared + 2x OVER 4x + 1