Question

I need help doing this question

Answer 1

the table is a representation of the graph

I can answer 1-3 though

1) the slope is 3 and represents hours to cost ratio

2) the y-intercept is 20 and represents the initial cost at 0 hours or the base amount Andy's repair costs (a job less than an hour)

3) 7 hours of labor and $440 is the cost

Answer 2

1) The slope is: $120 per hour

2) The y-intercept is (0, 20) and it means that the set fee for house calls is $20.

3) The coordinate (7, 440) means that the total fee for house calls after 7 hours of labor is $440.

How to Interpret the Linear Equation Graph?

The general form for a linear equation in slope intercept form is:

y = mx + c

where:

m is slope

c is y-intercept

1) The slope is gotten using the formula:

m =
`(y_(2) - y_(1) )/(x_(2) - x_(1) )`

Using the coordinates (0, 20) and (2, 140), we have:

m = (140 - 20)/(2 - 1)

m = $120 per hour

2) The y-intercept is (0, 20) and it means that the set fee for house calls is $20.

3) The coordinate (7, 440) means that the total fee for house calls after 7 hours of labour is $440.