80 POINTS Which properties justify the steps taken to solve the system?

{2a+7b=03a−5b=31

Drag the answers into the boxes to match each step.

10a+35b=0; 21a−35b=217
​31a = 217
a = 7
2(7)+7b=0
14 + 7b = 0
7b=−14
b=−2

Ok

Step-by-step explanation:

560

step-by-step explanation:

giggidy

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: