For 4 hours of work, a consultant charges $400. For 5 hours of work, she charges $450. Write a point-slope equation to show this, then find the amount she will charge for 10 hours of work.
If you have a TI-84 calculator or similar, use linear regression by going to STAT-EDIT and input your values as ordered pairs. Then go to STAT-CALC-LINREG and hit calculate.
