Answer:
1. y=3x+3
2. y=3x+1
Step-by-step explanation:
Use y=mx+b
1.
Sub (0,3) into y=mx+b
3=m(0)+b
b=3
Sub (3,9) into y=mx+3
9=m(3)+3
3m=6
m=2
EQUATION: y=3x+3
2.
Sub (1,4) into y=mx+b
4=m(1)+b
b=4-m
Sub (3,10) into y=mx+(4-m)
10=3m+4-m
2m=6
m=3
b=4-m=4-3=1
EQUATION:y=3x+1
