Identifying a Number to Multiply by When Using the Linear Combination Method
Warm-Up
Match each system to the number the first equation can be multiplied by to eliminate the
x-terms when adding to the second equation.
3x - 8y = 1
6x + 5y = 12
-2.
10x - 4y = -8
–5x + 6y = 10
1/2
-2x + y = 3
4x + 3y = 9
-1/2
-8x + 10y = 16
-4x - 5y = 13
2.

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)