# The line through A(-2,3) and B(4,b) is perpendicular to the line 2x-4y=5. Find the value of b

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My answer is b is equal to -9.

4y=2x-5

y=2x/4-5/4

y=1x/2 -5/4

comparing with y=mx+c

slope=1/2

since the is perpendicular

slope of another line is -2

slope= b-3/4+2

-2(6)=b-3

-12+3=b

-9=b