Answer:
-3x-6
Step-by-step explanation:
distribute the -3
19-7 equals 12. 12 times -6=-72. Sara’s number is 7
Y= f(x)= ax+b
when x= -1, y= -1
-1= -a+b | * ( -1)
when x= -3, y=2
2= -3a+b
-3a+b= 2
a - b= 1
--------------
2a=3
a=3/2 is the slope
-4/2 which simplifies to -2/1
The answer to your question is car A because every 1 gallon o gas it goes 33 MPH, car A also uses the least amount of gas. Hope this helps! ;D
