Thomas E. answered • 09/20/18

Tom E., a Patient and Knowledgeable Mathematics Tutor for You

The standard linear equation is y = mx + b. You are given 2 values for x and y, you must solve for m and b using a system of linear equations:

8 = -8(m) + b

4 = -1(m) + b solve using elimination (subtract the second equation from the first)

4 = -7m

m = -4/7 and use this in the second equation to solve for b

4 = -1(-4/7) + b

b = 24/7