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andrey2020 [161]
2 years ago
15

Graph the line through points (-1, -3) and (7, -8) From the graph, tell whether the slope is..

Mathematics
1 answer:
olga nikolaevna [1]2 years ago
8 0

Answer:

a) Negative slope

m=-\frac{5}{8}

Step-by-step explanation:

The graph of the given line is shown in the attachment.

We can see from the grap that, the line is sloping backwards.

Therefore the line has a negative slope.

The given points are (-1,-3) and (7,-8).

We use the formula m=\frac{y_2-y_1}{x_2-x_1} to find the slope of this line.

\implies m=\frac{-8--3}{7--1}

\implies m=\frac{-8+3}{7+1}

\implies m=-\frac{5}{8}

We can confirm from the result of our calculation that the slope is actually negative.

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X^2-7x-34=10<br><br> Please help me answer this question thank you
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Step-by-step explanation:

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3 years ago
I need help with Question 14 . I need to submit it by monday...<br> Pls help
GaryK [48]

Answer:

Distance between A and B is 5400 meters

Step-by-step explanation:

Consider "D" the letter to identify distance between A and B

Let's use "t" to identify the time of the first encounter (Devi and Kumar), and create an equation that states that the distance covered by Devi (at 100 m/min) in time "t", is equal to the total distance D minus what Kumar has covered at his speed (80 m/min) in that same time:

Recall that distance equals the speed  times the time:

distance= speed * time

First encounter:

100 * t = D - 80 * t

180 * t = D    Equation (1)

Not, 6 minutes later (at time t+6) , Devi and Li Ting meet .

Then for this encounter the distance covered by Devi equals total distance d minus the distance covered by Li Ting:

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Then the time t (first encounter) is 30 minutes. Knowing this, we can use either equation to find D:

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3 years ago
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