Answer:
B
Step-by-step explanation:
y=kx+m
k=y2+y1 / x2+x1
(3,5) and (7,9)
k=(9-5)/(7-3)=4/4=1
Now we want to find out what m is. This is by inserting a point in the equation of the line y=kx+m.
so I'll pick (3,5)
5=1×3+m
m= 2
To check if it's correct we could try it with the other point, (7,9).
9=1×7+m
m=2
Therefor the equation would be. y=1x+2
