3 years ago

Explain when you would use addition and when you would use subtraction to solve an inequality.

Mathematics

1 answer:

stealth61 [152]3 years ago

8 0

Answer:

With inequalities, you always use the opposite.

Step-by-step explanation:

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4 years ago

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Option d: The original balance on the credit card.

Explanation:

To determine the y-intercept, let us use the formula,

$y=mx+b$ where m is the slope and b is the y-intercept.

Also, $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Let us choose the coordinates $(3,1400)$ and $(5,1000)$

Substituting, we get,

$m=\frac{1000-1400}{5-3} =\frac{-400}{2} =-200$

Thus, the formula becomes

$y=-200x+b$

Now, to determine the value of b, let us substitute $(1,1800)$ in the formula,

we get,

$\begin{aligned}&1800=-200(1)+b\\&2000=b\end{aligned}$

Substituting the value of b in the formula, we have,

$y=-200 x+2000$

Thus, the y-intercept is $b=2000$

At y-intercept the value of x is 0. It means the y-intercept represents the amount of money left to pay on a credit card when the number of months is 0.

Thus, the y-intercept represents the original balance on the credit card.

Hence, Option d is the correct answer.

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4 years ago

Explain when you would use addition and when you would use subtraction to solve an inequality.​

Explain when you would use addition and when you would use subtraction to solve an inequality.