How do you find the y=mx+b equation with a problem like 3x+5y=9?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Which description is represented by a discrete graph? kiley bought a platter for $19 and several matching bowls that were $8 each. what is the total cost before tax? the temperature at 9 a.m. was 83° f and is heating up at an average rate of 6°f per hour. what is the temperature x hours later? juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. what is the total amount of calories he consumed? a bottle contained 2,000 ml of liquid and is being poured out at an average rate of 300 ml per second. how much liquid is left in the bottle after x seconds?