2 years ago

If 3x + 4y = 5, and x - y = 1, then what is y and x?

1 answer:

7 0

I hope this helps you 4×[x-y=1] 4x-4y=4 3x+4y+4x-4y=5+4 7x=9 x=9/7 9/7-y=1 y=9/7-1 y=2/7

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vagabundo [1.1K]

Answer:

Step-by-step explanation:

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2 years ago

jolli1 [7]

Answer: Yes. When you solve your equations, you're solutions will change a little bit. It's good because it'll give you the right answer.

I hope this helps you and I hope it's right. ☺

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3 years ago

tamaranim1 [39]

<em>Evaluate 2x-4y for x=2 and y=4.</em>
Replace x with 2 and y with 4.
2(2)-4(4)
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3 years ago

Lorico [155]

Answer:

slope = - $\frac{7}{5}$

Step-by-step explanation:

Calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (- 5, 0) and (x₂, y₂ ) = (0, - 7 ) ← 2 points on the line

m = $\frac{-7-0}{0-(-5)}$ = $\frac{-7}{0+5}$ = $\frac{-7}{5}$ = - $\frac{7}{5}$

4 0

2 years ago

Kipish [7]

The point-slope form:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (1, 2) and (3, 6). Substitute:

$m=\dfrac{6-2}{3-1}=\dfrac{4}{2}=2\\\\\boxed{y-2=2(x-1)}$

7 0

3 years ago