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3 years ago

What is the y-intercept of this equation? y = -2x + 1

Mathematics

2 answers:

ankoles [38]3 years ago

6 0

Answer:

y intercept at y = 1

Step-by-step explanation:

recall that for a linear equation expressed in slope-intercept form,

y = mx + b, where

m = slope and b = y intercept

in our case, y = -2x + 1, comparing this to the general equation above, we can see that clearly slope, m = -2 and y-intercept, b occurs at y = 1

Hope this helps!

wel3 years ago

3 0

Answer:

The slope is -2 and the y intercept is 1

Step-by-step explanation:

This equation is in slope intercept form

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

y = -2x +1

The slope is -2 and the y intercept is 1

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Delicious77 [7]

Answer:

At The given rate, the area of floor that Jessica can wax is 33.3 m²

Step-by-step explanation:

Given as :

The area of floor waxed = 20 square meters

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Let The area of floor waxed per hour = A m²

<u>Now, Applying unitary method</u>

∵ In $\dfrac{3}{5}$ hours, The area of floor waxed = 20 m²

∴ In 1 hour , The area of floor waxed = $\frac{20}{\frac{3}{5}}$ m²

I.e In 1 hour , The area of floor waxed = $\frac{20\times 5}{3}$ m²

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3 years ago

Beth and Pranav are selling cheesecakes for a school fundraiser. Customers can buy New York

Advocard [28]

Answer:

Cost of one New York style cheesecake = $5

Cost of one apple cheesecake = $9

Step-by-step explanation:

Let cost of one New York style cheesecake be = $x$

Let cost of one apple cheesecake be = $y$

Given:

3 New York stile cheesecake and 7 apple cheese cake were sold for a total of $78.

Cost of 3 New York style cheesecake be = $3x$

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Total = $78

We have:

A) $3x+7y=78$

12 New York stile cheesecake and 12 apple cheese cake were sold for a total of $168.

Cost of 12 New York style cheesecake be = $12x$

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We have:

B) $12x+12y=168$

Dividing each term in equation B by 12.

$\frac{12x}{12}+\frac{12y}{12}=\frac{168}{12}$

$x+y=14$

Solving for $x$ in terms of $y$

Subtracting $y$ both sides.

$x+y-y=14-y$

$x=14-y$

Substituting $x=14-y$ in equation A.

$3(14-y)+7y=78$

Using distribution:

$42-3y+7y=78$

$42+4y=78$

Subtracting both sides by 42.

$42+4y-42=78-42$

$4y=36$

Dividing both sides by 4.

$\frac{4y}{4}=\frac{36}{4}$

∴ $y=9$

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