Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 1 - Review - Review Exercises - Page 107: 21

Answer

The equation of that line is: $y = 4x - 12$

Work Step by Step

1. Find the point that these 2 functions cross each other: - At the x-intercept, the value for "y" is equal to 0, so the function pass through the "x axis". - Find the value for "x" when y = 0 in the "2x -3y =6" equation: $2x - 3(0) = 6$ $2x = 6$ $\frac{2x}{2} = \frac{6}{2}$ $x = 3$ - Therefore, the specified line pass through (3, 0). 2. The patter equation for a line is: "y = mx + b", we know that the slope (m) is equal to 4. $y = 4x + b$ 3. Substitute the x and y values (3, 0) in the equation and solve for b. $0 = 4(3) + b$ $0 - 12 = 12 + b - 12$ $-12 = b$ 4. Write the equation of the specified line: $y = 4x - 12$
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