What is the relationship between Walter and Ruth in Scene 1.1?

In A Raisin in the Sun, Ruth and Walter Younger are a married couple in their thirties. They live in a small apartment with Walter's mother and his sister Beneatha, and Ruth and Walter's son Travis. The opening scene of the play introduces us to these characters and their relationship. Ruth is first seen trying to wake up her son Travis to go to school and she also does the same for her husband Walter. This shows that Ruth is the most responsible member of the family and also that her husband is almost treated like another child. She must wake up the boy and the man and then make their breakfast. While Walter waits for his breakfast, he mentions headlines from the newspaper to his wife, who is described as indifferent in the stage directions. She is obviously busy with her daily tasks and doesn't have the free time to wake up slowly and relax like her husband does. 
Later in the scene, Walter talks to Ruth about a plan he has with his friends to buy and operate a liquor store. He wants Ruth's help talking to his mother so she will approve of him spending his father's life insurance money on this business venture. Ruth seems to think the store is a bad idea, and Walter is insulted, telling his wife "A man needs for a woman to back him up..." (I.1). This will be an ongoing conflict in the play. Walter believes that other family members, including Ruth, do not support or believe in his dreams. The family is poor and struggles to make ends meet; the insurance money would be helpful to them in many ways, and different characters have opposing ideas for how to spend that sum. Walter believes that he would be helping the family in the long run, by running a profitable business, but Ruth thinks it's too risky. Walter lashes out at her, saying she has no respect for or interest in his dreams or his relationship with his friends.
At the same time, we can tell that Ruth and Walter have been married for some time and know each other fairly well. The circumstances of their lives, however, have caused conflict to be the centerpiece of their relationship when we meet them at the start of the play.