Which linear equation represents each graph?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Orly uses 2 cups of raisins for every 12 cups of trail mix she makes. how many cups of trail mix will she make if she uses 8 cups of raisins?

Ascatter plot with a trend line is shown below. which equation best represents the given data? y = x + 2 y = x + 5 y = 2x + 5