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navik [9.2K]
3 years ago
6

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*.. IM GIVING 40 POINTS !! DONT SKIP :((.

Mathematics
1 answer:
Darina [25.2K]3 years ago
7 0

Answer:

y = 17x

Step-by-step explanation:

By looking at the y-values of the table, we can see that they increase by 17 for every increase of 1 in the x-values.

This means are slope is 17.

We can prove this by plugging two points into the slope equation: (y₂ - y₁) / (x₂ - x₁)

(1, 17) & (3, 51)

(51 - 17) / (3 - 1)

Simplify the parentheses.

(34)/(2)

Divide.

17

Your slope is 17.

Plug this into your standard slope-intercept equation.

y = 17x + b

To find b, plug in a point to x and y. (1, 17)

17 = 17(1) + b

Multiply.

17 = 17 + b

Subtract.

b = 0

Your equation is: y = 17x + 0 or just y= 17x.

You can also tell by looking at the table. b is the y-intercept, or the value when x = 0. The table shows that when x = 0, y = 0. Therefore, b = 0.

Check your equation by plugging in the other point.

34 = 17(2)

34 = 34

Your equation is correct.

Hope this helps!

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Tasya [4]

Answer:

The answer is -21

Step-by-step explanation:

To find the answer just multiply 7 by 3 and that's 21, so just add a negative sign to 21 and you get -21. I hope this helps :) please give me brainliest :)

6 0
3 years ago
Read 2 more answers
I need help solving this
pentagon [3]
Y=mx+b where m=slope=(dy/dx) and b=y-intercept (value of y when x=0)

You have two points...(1,-2),(3,2) so

m=(y2-y1)/(x2-x1)=(2--2)/(3-1)

m=4/2=2 now that you have the slope...

y=2x+b, you can use either point to solve for the y-intercept, I'll use (3,2)

2=2(3)+b

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y=2x-4
5 0
3 years ago
Simplify: 6a - 2(5a - 6)
NISA [10]

Answer:

-4a + 12

Step-by-step explanation:

8 0
3 years ago
the temperature is already at 40 degrees it rises 4.5 degrees per minute how long will it take to get to 76 degrees​
Andrei [34K]

Answer:

It will take 8 minutes for the temperature to reach 76°

Step-by-step explanation:

The expression for the total temperature in degrees at time t can be written as;

T=I+EM

where;

T=total temperature

I=initial temperature

E=temperature increase per minute

M=number of minutes

This can also be written as;

total temperature=initial temperature+temperature increase per minute×number of minutes

In our case;

T=76°

I=40°

E=4.5°

M=m

replacing;

76=40+(4.5×m)

4.5 m=76-40=36

(4.5 m)/4.5=36/4.5

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It will take 8 minutes for the temperature to reach 76°

7 0
4 years ago
The formula
son4ous [18]

Answer:

The truck travel must to have a constant speed of 22.06\ ft/sec

Step-by-step explanation:

we have

d=1.3t^{2}+t+2

where

d expresses a car's distance in feet

t is the number of seconds

<em>Find the distance d for t=8 sec</em>

d=1.3(8)^{2}+8+2=93.2\ ft

<em>Find the distance d for t=8.2 sec</em>

d=1.3(8.2)^{2}+8.2+2=97.612\ ft

The total distance in this interval of 0.2 sec is

97.612-93.2=4.412\ ft

<em>Find the speed of the car</em>

Divide the total distance by the time

4.412/0.2=22.06\ ft/sec

therefore

The truck travel must to have a constant speed of 22.06\ ft/sec

4 0
3 years ago
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