$y=mx+b \\ \\
(x,y)=(-4,-5) \hbox{ and } (x,y)=(-6,3) \\ \Downarrow \\
-5=-4m+b \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \times (-3) \\
3=-6m+b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\times 2 \\ \\
15=12m-3b \\
\underline{6=-12m+2b} \\
21=-b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\times (-1) \\
\boxed{b=-21}$

The value of b is -21.

4 0

4 years ago

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Evaluate the function for x = 2: f(x)= 7x - 5 (1 point)<br> 09<br> O 19<br> 0-9<br> 0-19

Vaselesa [24]

Answer:

Step-by-step explanation:

ƒ(x) = 7x - 5

f(2) = 7(2) - 5= 14 - 5

f(2) = 9

5 0

3 years ago

The foundation of a building is in the shape of a rectangle, with a length of 20 meters (m) and a width of 18 m. To the nearest

wariber [46]

Answer:

27m

Step-by-step explanation:

It's the Pythagorean Theorem.

20^2+18^2=c^2

400+324=c^2

724=c^2

take the square root of both sides

26.9m=c

to the nearest meter = 27

4 0

3 years ago

Find the absolute value of the difference of the solutions of x^2-5x+5=0.

jolli1 [7]

Answer:

It is either −0.854 or 5.854

8 0

3 years ago

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