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3 years ago

Y=4x-9 y=x-3 solve by substitution

Mathematics

2 answers:

Arisa [49]3 years ago

7 0

Answer:

x=2

Step-by-step explanation:

x-3=4x-9

x=4x-6

-3x=-6

x=2

taurus [48]3 years ago

5 0

Answer:

x = 2 y = -1

Step-by-step explanation:

let y = 4x -9 .................. eqn 1

y = x - 3 ........................... eqn 2

substitute for y = x - 3 in eqn 1

we have ,

y = 4x -9.................... eqn 1

i.e

x - 3 = 4x - 9

collect the like terms

-3 + 9 = 4x - x

6 = 3x

divie both sides by 3

x = 2

now put x = 2 in equation (2)

from

y = x - 3 .............eqn 2

y = 2 - 3

y = -1

therefore x = 2 y = -1

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Image relating to the question can be found in the attachment below :

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Juans three math quizzes this week took him 1/3?4/6?and1/5 hour to complete. List all the fraction from least to greatest

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Answer:

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