An function problem :D

Algebra Level 2

If line y=-x+a and line y=x+b intersects at point (m,8), evaluate a+b=?


The answer is 16.

Max Xi by Max Xi , 20, China

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2 solutions

Lakshit Seth
Jul 24, 2015

Same as athiyaman did

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We are given y = -x + a and y = x + b

adding both equations

we get 2y =a+b

Since the lines intersect at a point (m,8) , y will be 8

Therefore a+b=16

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