Answer:
a=1
Step-by-step explanation:
If it has a slope f 1 the points should be matching.
The slope would be 2/5 , good luck !
Answer: Please include more information, for now this is indeterminable
Step-by-step explanation: Sorry, add more info and I will be sure to answer
Because for example 349+567 is something you need to regroup.You start by the ones.9+7=16. You don't always need to regroup though