What’s the answer I keep trying my best, but I still can’t get it !!!

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.