Please please help!!
What X values have points on the graph.. and what are the domains of g(x)??

If 3x+8=3x+8 is it one solution or no solution

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Graph the line with the given slope m and y-intercept b. m=-3,b=1