Ask question

Ask question

All categories

2 years ago

13

What is an equation of the line that passes through the point (-1, -3) and is perpendicular to the line y=1/2x-7 ?

1 answer:

trasher [3.6K]2 years ago

3 0

Answer:

y = -2x - 5

Step-by-step explanation:

Set the slope of the given equation to the reciprocal to get a perpendicular slope:

y = 1/2x --> -2x

y = -2x + b will be your current equation. To get b, you must insert the given information: (-1, -3)

-3 = -2 (-1) + b

Solve:

-3 = 2 + b

<u>-2 -2 </u>

-5 = b

Thus your equation would be y = -2x - 5.

You might be interested in

Work this out by giving your answer as a fraction 2/3 - 1/2

suter [353]

When subtracting fractions, you need to make sure the denominators are the same. In 2/3 - 1/2, the denominators are different. To make them the same, find the least common denominator. In this case, the common denominator is 6

2/3 becomes 4/6

1/2 becomes 3/6

Now subtract the fractions with the common denominator

4/6 - 3/6 = 1/6

The answer is 1/6

Hope this helps. Please mark me as Brainliest. Thanks!

7 0

1 year ago

Read 2 more answers

PLZ HELP IM RUNNING OUT OF TIME BEST ANSWER GETS BRAINLIEST!!!!!!!

shtirl [24]

Answer:

y=8x

Step-by-step explanation:

Hope this helps you

8 0

2 years ago

Read 2 more answers

(2x+3y-4z)-(x-y-z) combine like terms

Fittoniya [83]

Given :-

... ( 2x + 3y - 4z ) - ( x - y - z )

... 2x + 3y - 4z - x + y + z

... x + 4y - 3z is the answer.

Hope it helps!

6 0

3 years ago

use the slope formula to calculate the slope of the line that contains the two points (-4,0) and (5,2)

Solnce55 [7]

Answer:

$\frac{2}{9} x$

Step-by-step explanation:

To find slope using two points you need to find the difference in x and y. You use $\frac{y_{2}-y_{1}}{x_{2}-x_{1} }$

So, 2-0=2 and 5-(-4)=9. Therefore the slope is 2/9x

3 0

3 years ago

Juan ordered 20 pizzas for a party. 45% of the pizzas have 8 slices each. The remaining 55% of the pizzas have 12 slices each. C

Mama L [17]

Total number of pizzas Juan ordered $20$

Since, $45\%$ of pizzas have $8$ slices.

Therefore, number of pizzas with $8$ slices are: $45\%\times(20)$

$=\frac{45}{100} \times(20)$

$=\frac{45}{10} \times(2)$

$=\frac{90}{10}$

$=9$ pizzas

Also, since, $55\%$ of pizzas have $12$ slices.

Therefore, number of pizzas with $12$ slices are: $55\%\times(20)$

$=\frac{55}{100} \times(20)$

$=\frac{55}{10} \times(2)$

$=\frac{110}{10}$

$=11$ pizzas

Now, there are $9$ pizzas with $8$ slices and $11$ pizzas with $12$ slices.

Therefore, total number of slices of pizza are: $=(9)(8)+(11)(12)$

$=72+132$

$=204$ slices

5 0

3 years ago