If you're good at logarithms please help me with question j on the bottom

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

How do you solving the solution of each system using elimination?

Agroup of randomly selected members of the foodies food club were asked to pick their favorite type of food. the bar graph below shows the results of the survey. there are 244 members in the foodies.