Solve this system of equations algebraically
Y+x= 19-2
x + y = 80
t. Isolate one variable in the system of equations.
y = -x²-x+19
y = -x + 80
-x+80=-82-x + 18
2 Use substitution to create a one-variable equation
3 Solve to determine the unknown variable in the equation
real number solution(s).
The system has

City l has a temperature of −3 °f. city m has a temperature of −7 °f. use the number line shown to answer the questions: number line from negative 8 to positive 8 in increments of 1 is shown. part a: write an inequality to compare the temperatures of the two cities. (3 points) part b: explain what the inequality means in relation to the positions of these numbers on the number line. (4 points) part c: use the number line to explain which city is warmer. (3 points)