Answers:
a) k=11
b) k=10
c) k=-3
d) k=4
e) k=1
I do not mind explaining
For the point (3,k) and virtually every point, 3 is the x coordinate and k is the y coordinate. Therefore, we can substitute 3 for x and solve for k (which is y).
a) 3(3)+2=11
b) 4(3)-2=10
c) 3-2(3)=3-6=-3
d) 3+4=7
e) 3-2(1)=1
