# Answer to Question #45768 in Algebra for Eloise

Question #45768

Please find out the f(x) = mx + b, given the slope and y-intercept of the linear function

x-intercept -8, y-intercept -1

x-intercept -8, y-intercept -1

Expert's answer

Let f(x) = mx + b, It is known that y-intercept=-1, it means that m*0+b=-1, therefore b=-1. It is known that

x-intercept=-8, it means that m*(-8)+b=0, -8m+b=0, i.e. -8m-1=0, -8m=1, whence m=-1/8. Answer: the slope m=-1/8, the y-intercept is b=-1.

x-intercept=-8, it means that m*(-8)+b=0, -8m+b=0, i.e. -8m-1=0, -8m=1, whence m=-1/8. Answer: the slope m=-1/8, the y-intercept is b=-1.

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