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3 years ago

Write the slope-intercept form of the given line. Include your work in your final answer.

Mathematics

2 answers:

yawa3891 [41]3 years ago

6 0

Answer:

your points are (1.5,0) and (0,3.5)

Step-by-step explanation:

your points are (1.5,0) and (0,3.5)

The equation for slope-intercept is y2-y1 over x2-x1

3.5-0 over 0-1.5

3.5 over -1.5

IRINA_888 [86]3 years ago

3 0

Answer:

y = -1.5x - 3

Step-by-step explanation:

The slope-intercept form of a line is y = mx + c where m is the slope of the line and c is the y-intercept of the line.

To find the slope of a line, you need to find the $\frac{rise}{run}$ between two of the points. I will be using the points (-2, 0) and (0, -3).

$\frac{rise}{run}$ = $\frac{-3-0}{0-(-2)}$

= $\frac{-3}{2}$

= -1.5

Now based on the graph, we see that the y-intercept is -3. Thus, the entire equation of the given line is: y = -1.5x - 3

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2 years ago

Linda purchase a prepaid phone card for $30. Long distance calls cost $.17 a minute using this card when do use her card. Linda

balandron [24]

Answer: her call lasted for 44 minutes

Step-by-step explanation:

Linda purchase a prepaid phone card for $30. This means that the credit on her card is $30.

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3 years ago

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2 years ago

If y varies directly with x when y=8,x=20 find the value of x when y=42

Alecsey [184]

The value of x is 105 when y=42

Step-by-step explanation:

A direct proportion means that the change in one quantity will also cause the change in other quantity

Given

y varies directly with x

x ∝ y

when the proportionality symbol is removed a proportionality constant is introduced

$x=ky\\k=\frac{x}{y}\\Putting\ y=8\ and\ x=20\\k=\frac{20}{8}\\k = \frac{5}{2}\\So,\ the\ equation\ will\ be\\x=\frac{5}{2}y\\Putting\ y=42\\x=\frac{5}{2}*42\\x=5*21\\x= 105$

The value of x is 105 when y=42

Keywords: Proportion, Direct variation

Learn more about proportion at:

#LearnwithBrainly

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3 years ago

Last year, Shen opened an investment account with $7800. At the end of the year, the amount in the account had decreased by 22.5

maks197457 [2]

Answer:

The decrease was $1755.

At the end of the year, he had $6045 in his account.

Step-by-step explanation:

Start with $7800.

Decrease of 22.5% of $7800.

22.5% of $7800 =

= $1755

The decrease was $1755.

$7800 - $1755 = $6045

At the end of the year, he had $6045 in his account.

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3 years ago