John owns a computer repair service. For each computer, he charges$50

plus$45

per hour of work. A linear equation that expresses the total amount of money John earns per computer isy=50+45x

. What are the independent and dependent variables? What is they

-intercept and the slope?

Select the correct answer below:

The independent variable (x

) is the amount of time John fixes a computer. The dependent variable (y

) is the amount, in dollars, John earns for a computer.

John charges a one-time fee of$50

(this is whenx=0

), so they

-intercept is50

. John earns$45

for each hour he works, so the slope is45

.

The independent variable (x

) is the amount, in dollars, John earns for a computer. The dependent variable (y

) is the amount of time John fixes a computer.

John charges a one-time fee of$45

(this is whenx=0

), so they

-intercept is45

. John earns$50

for each hour he works, so the slope is50

.

The independent variable (x

) is the amount, in dollars, John earns for a computer. The dependent variable (y

) is the amount of time John fixes a computer.

John charges a one-time fee of$50

(this is whenx=0

), so they

-intercept is50

. John earns$45

for each hour he works, so the slope is45

.

The independent variable (x

) is the amount of time John fixes a computer. The dependent variable (y

) is the amount, in dollars, John earns for a computer.

John charges a one-time fee of$45

(this is whenx=0

), so they

-intercept is45

. John earns$50

for each hour he works, so the slope is50

.