SOLUTION: To find b in y= - 2x+b, you can substitute in one of the coordinate pairs for x and y. For example, you can substitute 3 for x and 26 for y. This gives you 26=(-2)(3)+b.solve this

Algebra ->  Expressions-with-variables -> SOLUTION: To find b in y= - 2x+b, you can substitute in one of the coordinate pairs for x and y. For example, you can substitute 3 for x and 26 for y. This gives you 26=(-2)(3)+b.solve this       Log On


   

Question 930558: To find b in y= - 2x+b, you can substitute in one of the coordinate pairs for x and y. For example, you can substitute 3 for x and 26 for y. This gives you 26=(-2)(3)+b.solve this equation for b and substitute that value into the expression
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
A tutor might tell you to do exactly as you described. You should do this yourself.

y=mx%2Bb
y-mx=mx%2Bb-mx
y-mx=b
b=y-mx
You know what next to do.