Question

if ( 2 , 8) is a point in a line whose equation is y=-3x+k , determine the value of k?
-2
2
22
26

Answer 1

replace x by 2 and y by 8 and solve for k

Answer 2

\[8=-3\times 2+k\]
\[8=-6+k\]
\[14=k\]

Answer 3

which doesn't seem to be any of your answers, so let me check my work

Answer 4

no i like my answer for sure. are you sure these are right?

Answer 5

yeaa i just now noticed i meant to put a negative 8

Answer 6

then you have
\[-8=-6+k\]
\[-2=k\]