Write all linear equations in slope-intercept form.
-A house was purchased for $65,000. After 6 years the value of the house was $119,000. Find a linear equation that models the value of the house after x years.
A) y = 9000x
B) y = 9000x + 65,000
C) y = 119,000
D) y = 6x + 65,000

Question

Quizplus · Accepted Answer

The slope (rate of change in value) is calculated by dividing the change in value ($119,000 - $65,000 = $54,000) by the change in time (6 years), which gives $54,000 / 6 = $9,000 per year. The y-intercept (initial value) is the original purchase price, $65,000. Thus, the equation is y = 9000x + 65,000.

Write All Linear Equations in Slope-Intercept Form