Question

Dr. Shah visits patients at their homes. The equation y = 150x + 50 represents the amountshe charges, where y represents the total cost and x represents the number of hours shespends at the home. When the equation is graphed, what does the y-intercept represent?

Answer 1

y= 150x+50

y= total cost

x= number of hours

150 = cost per hour

50 = fixed cost

Since the equation is in slope-intercept form:

y=mx+b

Where:

m= slope

b= y- intercept (50)

the y-intercept represents the fixed cost of the visit.