Question

If you need the graphs I can send. them

Answer 1

we determine the accuracy of a graph by it's slope and coordinates

the graph shown in the image appears to be accurate and agree with the condition

Answer 2

slope represents rate. The fee she charged before was $6/hr so the slope (aka rate) for that line is 6. y = 6x line should go through coordinates (0, 0) and (1, 6)

The new fee is $8/hr so the new slope (aka rate) is 8. y = 8x line should go through coordinates (0, 0) and (1, 8)