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san4es73 [151]
3 years ago
7

In 2 seconds , an elevator travels 40 feet. In 3 seconds , the elevator travels 60 feet. In 4 seconds, the elevator travels 80 f

eet. Write an equation that gives the relationship between the number of seconds "x" and the distance "y" the elevator travels. Thankyou for the help :)
Mathematics
1 answer:
hodyreva [135]3 years ago
3 0
My answer for this question is y=20x
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Is this right? and do you use not use the x-intercepts?
vampirchik [111]

Answer:

You are correct.

Step-by-step explanation:

The x-intercept could be written the way you have or also it can be written as a point (-1, 0).

The y-intercept could also be written as a point (0, -2) But they are commonly written the way you have also.

So, the slope is -2. But just to be clear. That slope of -2 has nothing to do with the y-intercept of -2.

If you mark all the points on the line, to get from one point to the next point, you go down 2 and over (positive direction) 1. The down 2 in math is -2 and the over 1 is just 1. The slope is that ratio of -2/1.

Slope tells us if the line is going up or down, steep or flat, even horizontal. It was coincidence only that the y-intercept and slope were the same number.

6 0
3 years ago
Evaluate the expression 9 + (7 - 4)2 ÷ 3.<br><br> 3<br> 6<br> 12<br> 18
almond37 [142]

Step-by-step explanation:

9 + (7 - 4)2 / 3

= 9 + (3)2 / 3

= 9 + 6 / 3

= 9 + 2

= 11.

3 0
3 years ago
Read 2 more answers
1/2 =2x-1/3<br><br> HELP PLZZZZZZZZ
uranmaximum [27]

Answer:

x = \frac{5}{4}

Step-by-step explanation:

\frac{2x-1}{3} = \frac{1}{2} \\

Here cross - multiplying 3 & 2 gives :-

2(2x-1) = 3

Solving this further gives :-

2(2x-1) = 3\\=> 4x-2 = 3\\=>4x = 3+2\\=> 4x=5\\=> x = \frac{5}{4}

5 0
3 years ago
Read 2 more answers
I NEED HELP PLEASE!!
Anna71 [15]

Answer:

m = 2

Step-by-step explanation:

take 2 pairs from x

choose (1,5) and (2,7)

it will be m = 5 - 7

and in the bottom  1 - 2          it's a fraction

m = -2/-1

the numerator and denominator can't be both negative

so your answer is m= +2

m= slope

rate of change= slope

7 0
3 years ago
Solve this problem. 4|3x+4|=4x+8
Gelneren [198K]
The correct answer is x= -1. Hope this helps!!
6 0
3 years ago
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