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3 years ago

HELP!! i also need help with this as well

Mathematics

1 answer:

Sunny_sXe [5.5K]3 years ago

5 0

Answer:

uuuh 3

Step-by-step explanation:

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What is the y intercept of a graph containing the two points (3,1) and (7,-2)?

olasank [31]

The y intercept of a graph containing the two points (3,1) and (7,-2) is $\frac{13}{4}$

Solution:

Given points are (3, 1) and (7, -2)

The equation of line in slope intercept form is given as:

y = mx + c ------- eqn 1

Where, "m" is the slope of line and "c" is the y intercept

Let us first find the slope of line

The slope of line is given as:

$m = \frac{y_2-y_1}{x_2-x_1}$

Here the points are (3, 1) and (7, -2)

$(x_1, y_1) = (3, 1)\\\\(x_2, y_2) = (7, -2)$

Substituting in formula, we get

$m = \frac{-2-1}{7-3}\\\\m = \frac{-3}{4}$

To find the y intercept:

$\text{Substitute } m = \frac{-3}{4} \text{ and } (x, y) = (3, 1) \text{ in eqn 1 }$

$1 = \frac{-3}{4} \times 3 + c\\\\1 = \frac{-9}{4} + c\\\\ \text{Simplify the above equation } \\\\1 = \frac{-9+4c}{4}\\\\4 = -9 + 4c\\\\13 = 4c\\\\\text{Divide both sides by 4 }\\\\c = \frac{13}{4}$

Thus y -intercept is $\frac{13}{4}$

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3 years ago

Leonora is factoring a trinomial. The factors of the trinomial are shown on the model. Which trinomial did she factor? x2 + 4x –

max2010maxim [7]

The correct answer is x2 – 4x – 12

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3 years ago

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Which answer choice represents a person burning 45

S_A_V [24]

I’m working it out give me like 5 minsss

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2 years ago

Compare the values of the underline digits. 2,402 and 64,513 the value of 4 in _______________ is _______ times the values of

Ludmilka [50]

64,513; 10; 2,402. The 4 in 64,513 is essentially 4,000 whereas the 4 in 2,402 is only 400. 400(10)=4000.

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3 years ago

The null space for the matrix is spanned by the vector:_______

mafiozo [28]

Answer:

True

Step-by-step explanation:

The null space of matrix is set of all solutions to matrix. The linearly independent vectors forms subset which are spanned and forms the null space. The null space of vector can be found by reducing its echelon. The non zero rows formed are the null spaces of matrix.

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3 years ago