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Subjects>Math>Calculus

Y equals 3x-4 and y equals 4 plus x solve by elimination?

Updated: 4/28/2022

Wiki User

∙ 9y ago

Best Answer

y = 3x - 4

y = 4 + x

Subtract the second equation from the first:

y - y = 3x - 4 - 4 - x

0 = 2x - 8

2x = 8 so that x = 4

Substitute for x into second equation: y = 4 + 4 = 8

So the solutions is (4, 8).

Wiki User

∙ 9y ago

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Continue Learning about Calculus

What is the value of x for 30x40?

30x40=? Let's find out. What's 3x4? 12. Ok. So the 3 and 4 are out of the problem now. Look back at the problem. We see two zeros. We already took care of the 3 and 4. So what do we do with the zeros? You add them on to the number you already have. So 4x3=12. So it is 1,200. 30x40=1,200.

Related questions

What is the answer for x2 plus 1 plus 3x4 equals 2?

-7.5?

How do you solve x2 plus 3x4?

This is an expression and you do not solve an expression, but you can factor this one.X2 + 3X4X2(1 + 3X2)========

How can you Use the Rational Roots Theorem to solve for the rational roots 3x4 - 2x3 plus 8x2 - 6x - 3 equals 0?

the roots are 1, - 1/3, - 3 1/2 and 3 1/2

What is 3x4 equals to?

12

Is 3x4 plus 2x plus 5 equals 0 a quadratic equation?

No. It is a quartic equation. The largest power of x in a quadratic equation must be 2.

What is 8 plus 3x4?

20

If x equals 4 and y equals 8 then 3x plus 8y equals?

8x8 = 64 so it is 64 (the y) 3x4 = 12 so it is 12 (the x) 64+12 is 76.

Is the degree of the polynomial 3x4 plus 4x3 - 3x4 plus 5x plus 1 is 3?

Yes. Before using the polynomial for any productive purpose, it would have to be cleaned up and simplified. In that process, the +3x4 and -3x4 would go away, and the highest-order term remaining would be the 4x3.

How do you solve polynomial equations?

3x4-7x3+5x2-3x+6

What is a 2 step equation that equals 13?

3x4+1

What is 3x4 plus 5x3 plus x2 - 5 divided by x 2?

3x4 plus 5x3 plus x2 - 5 divided by x 2 =[(3x4) + (5x3) + (x2 - 5)]/x2 =(12 + 15 + x2 -5)/x2 =(27 - 5 + x2)/x2 =(22 + x2)/x2

Why is that 3x4 is not equals to 13?

Because 3 x 4 = 12

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