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3 years ago

How can you tell that a system of linear equations will have infinitely many solutions without computation?

1 answer:

3 0

If you can manipulate the two equations so that they have exactly the same coefficients (e. g., 3x + 4y = 8 and 2x + 4y = 8), then you conclude that the two lines coincide (overlap), and that there are thus infinitely many solutions.

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Help!

nignag [31]

1) 8 + 4 = -5 + 7

12 = 2

FALSE

2) y = -11x + 4

(0, -7): -7 = -11(0) + 4 ⇒ -7 = 0 + 4 ⇒ -7 = 4 False

(-1, -7): -7 = -11(-1) + 4 ⇒ -7 = 11 + 4 ⇒ -7 = 15 False

(1, -7): -7 = -11(1) + 4 ⇒ -7 = -11 + 4 ⇒ -7 = -7 True

(2, 26): 26 = -11(2) + 4 ⇒ 26 = -22 + 4 ⇒ 26 = -18 False

Answer: C

3) Input Output

0 0

1 3

2 6

3 9

4 12

5 15

6 18

Rule: input is being added by 1, output is 3 times x

4) c = 65h

5) 2x = -6

$\frac{2x}{2} = \frac{-6}{2}$

x = -3

6) 8j - 5 + j = 67

9j - 5 = 67 added like terms (8j + j)

+5 +5

9j = 72

$\frac{9j}{9} = \frac{72}{9}$

j = 8

7) y = mx + b

-b -b

y - b = mx

$\frac{y - b}{x} = \frac{mx}{x}$

$\frac{y - b}{x} = m$

5 0

4 years ago

Can anyone help please?

DanielleElmas [232]

Answer:

how do you need help. what's the problem

Step-by-step explanation:

5 0

3 years ago

Help me create three polynomials that match the criteria on the left

liberstina [14]

Answer:

Symmetry of functions

A function is an even function if its graph is symmetric with respect to the yyy-axis.

Algebraically, fff is an even function if f(-x)=f(x)f(−x)=f(x)f, left parenthesis, minus, x, right parenthesis, equals, f, left parenthesis, x,

Step-by-step explanation:

MARK ME AS A BRAINLIST

5 0

2 years ago

Write the equation of the line with a slope of 0 and containing the point (- 6, 5).

defon

Y=mx+b
5=0(-6)+b
b=5
So equation
y=0x+5

Or

y=5

4 0

3 years ago

Kelly and 23 friends go roller skating they've had a total of $186 about how much does the cost for one person to the skate

pashok25 [27]

about 8 dollars per person

5 0

4 years ago

Read 2 more answers