Evaluate the expression when x=3 and y=5 4 y - x

2 answers:

6 0

x=3 and y=5
Equation: y-x
First: You will take your x and your y and plug it into the equation.
You will get: 5-3
Last: You will subtract 3 from 5
You will get as your answer: 2
HOPE THIS HELPS! ^_^

denis23 [38]3 years ago

4 0

1) Plug the numbers in : (5) - (3)
2) Subtract 5 - 3 = 2

Therefore, the answer is 2

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An easy question all wrong or unhelpful or no-work answers will be reported.

boyakko [2]

Substitution:
2x + (6(1/2x - 6)) = 19
2x + 3x - 36 = 19
5x - 36 = 19
+ 36
5x = 55
÷ 5
x = 11

y = (1/2 × 11) - 6
y = 5.5 - 6
y = -0.5

Elimination:
y = 1/2x - 6
- y
0 = 1/2x - 6 - y
+ 6
1/2x - y = 6

3x - 6y = 36
2x + 6y = 19
(add)
5x = 55
÷ 5
x = 11

y = (1/2 × 11) - 6
y = 5.5 - 6
y = -0.5

I hope this helps! Let me know if you need me to explain why I did some things :)

8 0

3 years ago

Determine the x- and y-intercepts of the graph of y=−1/3x+3 .

Alinara [238K]

Answer:

x intercept

$y = 0 \\ 0 = \frac{1}{3} x + 3 \\ \frac{1}{3} x = - 3 \\ x = - 9$