book Maths Puzzle Numerical Ability

SIS TIMES A NUMBER IS THE SAME AS THE SUM OF TWICE THE NUMBER AND 36.WHAT IS THE NUMBER?A)54 B)51 C)9 D)6

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book Other Question

Use only the y-intercept to graph y=-2/3xa+4. Explain in consise sentences the process you used.
I'm not sure how to solve this answer. I tried finding the reciprocal and came up I'M having a problem trying to solve this [(-3,3),(-1,1),(0,o),(2,2),(4,4)]