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3 years ago

How do you tell if a graph is a function

2 answers:

6 0

You just draw a parallel line to the y-axis. If this line intercepts MORE THAN ONE POINT, you can deduce that the graph is NOT a FUNCTION

miss Akunina [59]3 years ago

4 0

Take a vertical line and place it on thegraph. If the graph is a function, then no matter where on the graph you place the vertical line, the graphshould only cross the vertical line once.

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(PLEASE HELP) The picture explains everything.

mamaluj [8]

Store #2 since it has a lower MAD

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2 years ago

How can you break up the figure into familiar shapes to determine the area?

il63 [147K]

Break it off where the triangle goes into a square/ rectangle

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3 years ago

Read 2 more answers

Write an equation in slope-intercept form of the line that passes through (-1, 4) and (0, 2).

arsen [322]

Answer:

$y=-2x+2$

Step-by-step explanation:

Hi there!

Slope-intercept form: $y=mx+b$ where m is the slope and b is the y-intercept (the value of y when the line crosses the y-axis)

1) Determine the slope

$m=\frac{y_2-y_1}{x_2-x_1}$ where the two given points are $(x_1,y_1)$ and $(x_2,y_2)$

Plug in the given points (-1, 4) and (0, 2)

$=\frac{2-4}{0-(-1)}\\=\frac{-2}{0+1}\\=\frac{-2}{1}\\= -2$

Therefore, the slope of the line is -2. Plug this into $y=mx+b$ :

$y=-2x+b$

2) Determine the y-intercept

$y=-2x+b$

Recall that the y-intercept is the value of y when the line crosses the y-axis, meaning that the y-intercept occurs when x is equal to 0.

One of the given points is (0,2). Notice how y=2 when x=0. Therefore, the y-intercept of the line is 2.

Plug this back into the equation:

$y=-2x+2$

I hope this helps!

6 0

3 years ago

Calculate cose to two decimal places.

Monica [59]

Answer:

B. 0.69

Step-by-step explanation:

Law of Cosines: cos A = (b² + c² - a²) / 2bc

cosθ = (7² + 11² - 8²) / 2*7*11 = 106/154 = 0.688 ≈ 0.69

4 0

3 years ago

I bought a carpet for my bedroom. The length of the carpet was 6 ft. The width was 12 ft. How many square feet is my carpet?

8090 [49]

72 square feet

EXPLANATION: when finding area of a rectangle, multiple Length x Width and 6x12=72

5 0

3 years ago