What is the slope intercept form for (-4,6) and (1,1)

Which system of linear inequalities is represented by the graph?

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?