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olchik [2.2K]
3 years ago
10

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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strojnjashka [21]

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y = -4x + something

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2 years ago
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The graphs below have the same shape. f(x) = x^2 what is the equation of the graph of g(x)?
Yakvenalex [24]

Answer:

Answer: OPTION B

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By definition, the parent function is the simplest form of  a function. In this case, you have the quadratic parent function

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Therefore, the equation of the function g(x) is:

6 0
3 years ago
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a parabola has an x-intercept at 2, its axis of symmetry is the line x=4, and the y-coordinate of its vertex is 6. Determine the
nlexa [21]

Answer:

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Step-by-step explanation:

An x intercept of 2 means that the point (2, 0) is in the graph of the parabola.

We can also write the general expression for the parabola in vertex form, since we can use the information on the coordinates of the vertex: (4, 6) - recall that the axis of symmetry of the parabola goes through the parabola's vertex, so the x-value of the vertex must be x=4.

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Elden [556K]

Answer:

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3 years ago
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