Linear Function

Algebra Level 2

c > 0 c>0 a b < 0 ab<0 a c > 0 ac>0 b > 0 b>0

Kumar Gupta by Kumar Gupta , 23, India

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2 solutions

Erlo Villegas
Feb 28, 2014

Rewriting the equation, we have

y= -ax/b - c/b

Since the a > 0 and slope (-a/b) is positive, b must be < 0

Therefore ab < 0

3 Helpful 0 Interesting 0 Brilliant 0 Confused
Vaibhav Setia
Mar 6, 2014

in equation ax + by +c

if we put y = 0 it is shown that line intersects on positive axis.

therefore c= -c/a but a is positive and answer shoul be +ve therefore c has to be negative.

now putting x =0 we gety= -c/b and it intersects at negative axis.

but we have c negative so b has to be negative to get last answer as negative.

SO a is positive and b is negative therefore ab<0.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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vaibhav setia - 7 years, 3 months ago

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