2 years ago

Shirley is saving money to buy a computer

Mathematics

1 answer:

Mnenie [13.5K]2 years ago

8 0

Congrats to Shirley!! Does she have a question?

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Write the equation of the line in fully simplified slope-intercept form.

fiasKO [112]

$y = -\frac{1}{2}x - 1$

Step-by-step explanation:

Let's pick two points on the line: $P_1(-4, 1)$ and $P_2(2, -2).$ Let's calculate the slope of this line using these points:

$m = \dfrac{y_2 - y_1}{x_2 - x_1} = \dfrac{-2 - 1}{2 - (-4)} = -\dfrac{1}{2}$

With this value of the slope, we can write the general slope-intercept form of the equation as

$y = -\frac{1}{2}x + b$

To solve for the y-intercept b, let's use either P1 or P2. I'm going to use P2:

$-2 = -\frac{1}{2}(2) + b \Rightarrow b = -1$

Therefore, the slope-intercept form of the equation is

$y = -\frac{1}{2}x - 1$

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2 years ago

We have 6 face red cards (JQK x 2) and 16 black cards, so a total of 22 cards.The red face cards and the black cards numbered 2-

In-s [12.5K]

Answer:

I dont know

Step-by-step explanation:

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2 years ago

What is 17.70 = 7/2m + 13.50 ?

Fantom [35]

<u>answer:</u> $m = 1.2$

$17.70 = \frac{7}{2} m + 13.50$ | subtract 13.50 and move it over

$4.2 = \frac{7}{2}m$ | divide by 7/2

$1.2 = m$ | final answer

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3 years ago

A shop buys pairs of trainers for £20 each. They sell them to make a 30% profit on each pair. What is the selling price of the t

Alexxx [7]

Answer:

60 dollars i think

Step-by-step explanation:

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3 years ago

How do I solve this

timurjin [86]

Answer:

4 hours

Step-by-step explanation:

120-72=48

48÷12=4

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3 years ago

Read 2 more answers