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4 years ago

Can you help me please I need it please and can you answer the question and put space in the answers

Mathematics

1 answer:

jonny [76]4 years ago

6 0

Answer:

I. C

II. A, D

III. B

Lines that coincide have infinite solutions, and parallel lines have no solutions.

Step-by-step explanation:

3. To solve this equation, look at the slopes of the equation. The equations are in y=mx+b form. m is equal to the slope.

Equations with different slopes will have one solution, meaning that the lines will intersect once.

Equations with the same slope will either have no solutions or infinite solutions. <u>If the equations are the exact same</u>, it will have infinite solutions, meaning that the line "intersects" itself in infinite places since its basically one line right on top of another. <u>If the equations have different y-intercepts</u>, it will have no solutions because the lines are going at the same angle, are parallel and will never intersect.

This means that A and D have one solution, B has infinite solutions, and C has no solutions.

4. Lines that coincide have infinite solutions, and parallel lines have no solutions.

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Answer:

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Step-by-step explanation:

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3 years ago

Using the graph of the quadratic function, identify the domain

galina1969 [7]

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==========================================================

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3 years ago

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Aleonysh [2.5K]

Step-by-step explanation:

There are two commonly recognized beginner methods to solve a system of equations. The first is elimination and the second is substitution. I will go over both of them here.

Substitution:

$y=-2x-9, y=-5x-21$

$-2x-9 = -5x -21$

$3x=-12$

$x=-4$

$y=-5(-4)-21$

$y=-1$

Elimination:

This method is a bit hard to explain without visual aid, but I'll try my best :)

In elimination you can subtract each value with a common variable from its counterpart in the other equation. For this example, subtract y-y to get 0, -2x - (-5x) to get 3x, and -9 - (-21) to get 12.

Thus,

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$y=-5(-4)-21$

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3 years ago