Answer:
y=x-9
y=2x-15
Step-by-step explanation:
To solve this we can just pick a random number for our slope and solve for the y intercept
For example lets say the slope is 1
we know that wehn x=6 y= -3 so we have the following equation
-3= 6+b
B is -9
which means one equation is
y=x-9
We can just repeat this same process
Let's say the slope is 2
-3 = 2*6+b
-3= 12
b= -15
which means taht
y=2x-15
