Question #bb165

↳Redirected from "Which following pairs of atoms, have a lower electron affinity? a) Ca,K b) I,F c) Li, Ra. I seriously don't know anything about electron affinity all ik that it can buy another element"
1 Answer
Manasvini Nittala
Jan 17, 2018

The equation of line will be #4x-5y-21=0#

Explanation:

let the equation of the line be #color(red)(ax+by+c=0)->(1)#
it is given that #(1)# is perpendicular to the line #5x-4y+1=0->(2)#
line #(2)# is of the form #ax+by+c=0#
a line perpendicular to #ax+by+c=0# will be of the form#:#
#bx-ay+k=0#
hence the equation of one will be #-4x-(-5)y+k=0#
#i.e. 4x-5y-k=0->(3)#
since #(3)# passes through #(1,5)#
#rArr4(1)-5(5)-k=0rArrk=-21#
hence the equation of line will be #4x-5y-21=0#

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