2 years ago

Y = x - 3 y = -7 solve the system of equations by subtraction

Mathematics

2 answers:

Ludmilka [50]2 years ago

8 0

The answer to their question is X= -5

adoni [48]2 years ago

6 0

Step-by-step explanation:

$y = \frac{4}{5} x - 3 \\ y = - 7 \\ - 7 = \frac{4}{5} x - 3$

$- 7 + 3 = \frac{4}{5} x \\ - 4 = \frac{4}{5} x \\ - 20 = 4x \\ x = - 5$

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Read 2 more answers

If g (x) = 3x²-4, then find g (-3)

Semenov [28]

Answer:

g(-3) = 23

Step-by-step explanation:

This question is telling us that x = -3. Knowing this, we can plug x into the equation and solve to find g(-3).

$g(-3) = 3(-3)^{2} -4$

$g(-3) =3(9)-4$ Square -3 to get 9

$g(-3) = 27-4$ Multiply 9 by 3 to get 27

$g(-3) = 23$ Subtract 4 from 27 to get 23

Thus, g(-3) is equal to 23.

I hope this helps! Good luck!

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