SOLUTION: Find the value of b so that the graph of bx+5y=8 and has a slope of 4.

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We know that the equation for any linear line can be modeled with the formula,

y = mx + b

And we are given

bx + 5y = 8

But with a little bit of work, we can put this into the same form and begin solving for b.

bx + 5y = 8
5y = -bx + 8


Now that it's in a familiar form, we can begin solving for b. For the line equation model, we know that the slope is m, which in our equation is , so we just have to ask ourselves, "What number divided by five equals four?"

= 4
b = 20

You can put this solution on YOUR website!
The original solver started out right, but got a little careless with her signs.




Given that we need to find b such that the slope is 4, we have




So the correct answer is b = -20, not b=20 as stated by the original solver.