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3 years ago

What is the equation of this line? y=2×-3y=-1/2×-3y=-2×-3y=1/2×-3

Mathematics

1 answer:

Bad White [126]3 years ago

5 0

Answer:

First option, y = 2x - 3

Step-by-step explanation:

Remember the formula for a line is y=mx+b, where m is slope (slope = rise/run) and b is y-intercept (y-intercept is the point that crosses the y-axis)

Since the line on the graph crosses the y-axis at -3, that will be the y-intercept. Starting from that point, find another point. In this case you go upwards 2 units and to the right 1, so your slope will be 2/1 or just 2 .

Hope this helped :)

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Troyanec [42]

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3 years ago

Determine the equation of the line passing through the points (-1, 1) and (1, 7).

evablogger [386]

Answer:

$3x + y = -4$

Step-by-step explanation:

We were given to points on the line we are trying to find, hence we are able to determine the slope/gradient.

$( - 1, \: 1) \: and \: (1, \: 7) \\ slope = \frac{ {y}^{2} - {y}^{1} }{ {x}^{2} - {x}^{1} } \\ \\ s = \frac{7 - 1}{1 - ( - 1)} \\ s = \frac{6}{2}$

Slope is equal to 3.

Since we have the value for the slope, we can now use one of the points on the line to determine the equation of the line.

note that the coefficient of x is the slope. In this case the A from the standard form (Ax + By= C) is the slope.

$\\ let \: us \: use \: the \: point \: ( - 1, \: 1) \\ a = 3 \: \: \: \: y = 1 \: \: \: x = - 1\\ ax + by = c \\ 3( - 1) + 1 = c \\ - 3 + 1 = c$

$- 2 = c \\ therefore \: the \: equation \: of \: the \\ \: line \: is \\ ax + by = c \\ 3x + y = - 4$

8 0

3 years ago

Please help me with this question asap i’ll give you brainliest

mina [271]

Answer:

Step-by-step explanation:

Recall the exponent property that:

$x^{\frac{1}{n}}=\sqrt[n]{x}$

And vice versa:

$\sqrt[n]{x}=x^{\frac{1}{n}}$

Thus:

$\sqrt[3]{500} =(500)^{\frac{1}{3}}$

The answer is C

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3 years ago

Read 2 more answers

What is the next item in the sequence below? -324, 108, -36, 12,...

LenKa [72]

The answer is -4 because the number keeps getting divided by -3

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4 years ago

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steposvetlana [31]

Answer:

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It means:

$\text{Sum of polynomials } \Rightarrow \text{ It will always be a polynomial}$