Khan academy Help please

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

When you find the area of a triangle do you use in. or in2

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions. to make 5 batches, jude needs to packages of pre-mixed mortar. jude uses 9 quarts of water to make batches of cement. if jude uses 16 packages of pre-mixed mortar, he will need to use quarts of water. to make 0.5 batch of cement, jude should packages of pre-mixed mortar. can you fill in the blanks