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2 years ago

What is the slope of the line represented by the equation? –2x + y = –1

Mathematics

2 answers:

Harrizon [31]2 years ago

8 0

Isolate the y to one side so we get: y = 2x - 1
The slope of the line is 2.

telo118 [61]2 years ago

3 0

Answer:

The the slope is 2.

Step-by-step explanation:

2x+y-y=-1-y

2x=-1-y

\frac{2x}{2}=-\frac{1}{2}-\frac{y}{2}

\frac{-1-y}{2}

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What time is it if half of what has already passed remains until the end of today?

lukranit [14]

Answer:

Step-by-step explanation:

We know that a day contains 24 hours in total.

The time already passed will be represented by $x$ .

The remaining time would be $\frac{x}{2}$ , becasye half of what has already passed remains until the end of the day.

Basically, the sum of these two expression gives 24 hours in total.

$x + \frac{x}{2} =24\\\frac{3x}{2}=24\\ x=16$

Therefore, the actual time is 4 p.m.

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3 years ago

Name and locate points in all four quadrants of the coordinate plane.

IceJOKER [234]

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3 years ago

Show that the transformation T defined by T(x1, x2) = (2x1 - 3x2, X1+4, 5x2) is not linear.

erastovalidia [21]

Let u = (1, 0) and v = (0, 1). Then

T (u) = (2*1 - 3*0, 1 + 4, 5*0) = (2, 5, 0)

T (v) = (2*0 - 3*1, 0 + 4, 5*1) = (-3, 4, 5)

=> T (u) + T (v) = (-1, 9, 5)

but

T (u + v) = T (1, 1) = (2*1 - 3*1, 1 + 4, 5*1) = (-1, 5, 5)

=> T (u + v) ≠ T (u) + T (v)

which means T does not preserve addition, so it is not linear.

4 0

2 years ago

The sides of a rectangle are 15cm and 7cm long. How far is the point of the diagonal cross section from the sides of this rectan

irinina [24]

Answer:

See below in bold.

Step-by-step explanation:

If we draw a line from the point of intersection to the longest side of the rectangle it will meet it at the midpoint.

The same thing will happen when the line is draw to the shortest side.

So the point of intersection is 1/2 * 7 = 3.5 cm from the longest side and 15/2 = 7.5 cm from the shortest side.

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3 years ago

In AIJK, i = 850 inches, j = 250 inches and ZK=80°. Find the length of k, to the nearest inch

bearhunter [10]

Answer:

843

Step-by-step explanation:

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3 years ago