Question

If (4,19) is a solution of the equation y=ax+3 then a=?

plz give the full solution

Answer 1

X=4
y=19
so,ax=y-3
=>a=(19-3)/4=4
=>a=4

Answer 2

y=ax+3
19=a*4+3
19-3/4=a
16/4=a
a=4 is answer