Consider the system of equations: 3x+2y=18 and x-2y=14.
what property is used to transform the equation
x-2y=14 into -3x+6y=-42?

a. addition property of equality
b. substitution property of equality
c. multiplication property of equality
d. division property of equality

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)