slope formula yields: Δy − −120000 = = 0 120000 = = m −12000 > 15000 = 7500 x Δx − 10 0 10 = 120000 . b 2 Therefore, the linear function is The company a profit if it sells more ( ) than 7500 units. = + = −12, 000 + 120, 000 . V x mx b x (0,120000) The is , so y-intercept
slope formula yields: m = Δy = 0 − 120000 = −120000 = −12000 x > 15000 = 7500 Δx 10 − 0 10 2 The company a profit if it sells more than 7500 units. The y-intercept is (0,120000) , so b = 120000 . Therefore, the linear function is V ( x ) = mx + b = −12, 000 x + 120, 000 .
Downloadable-Solution-Manual-for-Precalculus-Concepts-Through-1.docx