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Sveta_85 [38]
3 years ago
12

What was his mistake????

Mathematics
1 answer:
stealth61 [152]3 years ago
4 0
He didn't distribute 1/3 to x and 15 before solving
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Determine the standard form of the equation of the line that passes through (-5,0) and (0,-9)
bonufazy [111]

Answer:

9x+5y=-45

Step-by-step explanation:

To write the equation of a line we must have a slope and a point. To find the slope we use the slope formula and substitute (x,y) points in it as shown below:

m=\frac{y_2-y_1}{x_2-x_1}=\frac{-9-0}{0--5}=\frac{-9}{0+5}=\frac{-9}{5}=\frac{-9}{5}

Now that we have the slope, plug in the slope and choose one point to plug into the point slope formula. Use the point-slope form to write the equation, then simplify and convert into the slope intercept form.

(y-0)=-9/5(x--5)

y=-9/5(x+5)

y=-9/5x-9

Now convert to standard form, Ax+By=C.

y=-9/5x-9

9/5x+y=-9

9x+5y=-45



5 0
3 years ago
Read 2 more answers
Tell whether the relation is a function. {(-5, -3), (-1, 3), (4, 3), (8, 8)}
VladimirAG [237]

Given:

The relation is {(-5, -3), (-1, 3), (4,3), (8, 8)}.

To find:

Whether the given relation is a function or not.

Solution:

A relation is called a function, if there exist a unique output for each input.

We have, a relation given as

{(-5, -3), (-1, 3), (4,3), (8, 8)}

Here, all x-values are different. So, each x-value has a unique y-value.

Thus, there exist a unique output for each input.

Therefore, the given relation is a function.

8 0
3 years ago
The product of (n2-6n+3) and -4 is
azamat

Answer:

-4n2+24n-9

Step-by-step explanation:

multiply each term by -4 to get -4n2+24n-9

5 0
3 years ago
Read 2 more answers
Write an expression for " 9 less than three times a number"
hoa [83]

Answer: 3x - 9

Step-by-step explanation: "9 less than three times a number" does not mean 9 minus three times a number, less than actually switches the order around so that 9 less than three times a number actually means three times a number minus 1 which can be read as 3x - 9.

8 0
3 years ago
Find the measure of the indicated angle to the nearest degree​
STatiana [176]

Answer:

Step-by-step explanation:

5 0
3 years ago
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