On a quiz, Tom received 2 points for each correct spelling word, and 4 points for each correct definition, Tom received 80 point
s for a total of 30 correct
responses. The equations and graph below can be used to determine the number of Tom's correct responses, where x represents the number of
correct spelling words and y represents the number of correct definitions.
Correct responses: 2 + y = 30
Total points: 2x + dy = 80
*Graph*
Tom got BLANK words correct and BLANK definitions correct
Words correct
A. 10
B. 20
C. 30
Definitions correct
A. 10
B. 20
C. 30
responses. The equations and graph below can be used to determine the number of Tom's correct responses, where x represents the number of
correct spelling words and y represents the number of correct definitions.
Correct responses: 2 + y = 30
Total points: 2x + dy = 80
*Graph*
Tom got BLANK words correct and BLANK definitions correct
Words correct
A. 10
B. 20
C. 30
Definitions correct
A. 10
B. 20
C. 30
1 answer:
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The correct option is (B). And
.
Given Equations,
We have to find out Which system of equations is equivalent to the Given system of Equations.
1). System of equation are,
taking - common and transposing to R.H.S we get,
This equation is not equal to equal (2), so the option (1) is not the system of equation equivalent to given Equations.
Similarly, on checking other options,
2. system of equation,
Taking -3 common from L.H.S. we get,
.
Hence the Above system of equation is equivalent to the given system of equation.
So, there is no need to check option (3) and option (4).
Hence the correct option is (B).
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