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QUESTION 12

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 is y=50+45x. What are the independent and dependent variables? What is the y-intercept and the slope?

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 when x=0), so the y-intercept is 50. John earns \$45 for each hour he works, so the slope is 45.

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 when x=0), so the y-intercept is 45. John earns \$50 for each hour he works, so the slope is 50.

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 when x=0), so the y-intercept is 50. John earns \$45 for each hour he works, so the slope is 45.

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 when x=0), so the y-intercept is 45. John earns \$50 for each hour he works, so the slope is 50.

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