Please help me, l'm falling in math class​

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

Asalsa recipe uses green pepper, onion, and tomato in the extended ratio 3: 5: 7. how many cups of tomato are needed to make 105 cups of salsa? a. 7 b. 21 c. 35 d. 49

Lowest fraction using common term 28/35