write an equation in slope intercept form for a line that passed through the two points below (-4, -5) (4,1)

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?