Answer
m=0; b=4
Work Step by Step
There is no x-value, so we know that m equals 0. However, we see that y always equals 4, so we know that the y-intercept is 4.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.