Determine the equivalent system for the given system of equations. 4x − 5y = 2

10x − 21y = 10

A. 4x − 5y = 2

3x − y = 4

B. 4x − 5y = 2

24x − 47y = 22

C. 4x − 5y = 2

10x + 3y = 15

D. 4x − 5y = 2

14x + 26y = 12

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Step-by-step explanation:

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solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis