Step-by-step explanation:
y=kx+m
k=y2-y1 / x2-x1
1. k=7-5/2-1= 2/1=2
y=2x+m
we want to find out what m is. to do so insert one of the points and solve the equation.
I'll choose (1.5)
5=2×1+m
m= 3
to make sure it's correct I'll use the other point too and see if I get the same answer.
(2.7)
7=2×2+m
m=3
the equation you'll end up with is
[tex]1) \: \: \: \: \: y = 2x + 3[/tex]
do the same to the other ones.
[tex]2) \: \: \: \: y = - 3 + 1[/tex]
try doing the 3 one yourself
