Solve the system using the substitution method. y=4
x+y=7
Demonstrate how you substituted to write an equation in one variable.

Analyze the student’s work. is the answer correct? explain. no, the student should have added 3 + 4 to get the total number of sections, and used the fraction instead of . no, the student should have subtracted 2 from –6 to find the distance. no, the student should have added 2 at the end to add to the starting point. yes, the student’s answer is correct.