For the linear function f(x) = mx + b, f(-5) = 18, and f(4) = 0. Find m and b. I found that m = -2 using the formula m = y2-y1 / x2-x1 I cannot remember how to find b.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter5: Polynomial And Rational Functions
Section: Chapter Questions
Problem 27PT: Find the unknown value. 27. y varies jointly with x and the cube root of 2. If when x=2 and...
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For the linear function f(x) = mx + b, f(-5) = 18, and f(4) = 0. Find m and b.

I found that m = -2 using the formula m = y2-y1 / x2-x1

I cannot remember how to find b.

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