All categories

2 years ago

Which point-slope equation represents a line that passes through (3,-2) with a slope of -4/5?

Mathematics

1 answer:

Viefleur [7K]2 years ago

8 0

Answer:

y + 2 = -4/5 (x - 3)

Step-by-step explanation:

y - y1 = m (x - x1). Put in your points for y1 and x1, and always remember to flip your signs.

unfortunately, I don't know why that isn't one of your answers, so sticking with the positive 2 I would choose y+2=- (- 3) if I were you. Looks like the -4/5 disappeared somehow?

Hope this helps

You might be interested in

James asks 60 pupils which drink they liked best from cola milk and water 32 boys were in the survey 12 of the boys said they li

adelina 88 [10]

Answer:

Students altogether liked cola the best 26

Step-by-step explanation:

Total no of pupils = 60

Boys = 32

girls = 28

we will make a table

Gender cola milk water total

Boys 12 4 32

Girls 9 28

we can find the missing numbers

Let x be for milk

In boys 12 + x + 4 = 32

x = 16

In girls

as 21 liked milk altogether

so girls = 21 - 16 = 5

Gender cola milk water total

Boys 12 16 4 32

Girls 5 9 28

For cola let y

in girls

y + 5 + 9 = 28

y = 14

Gender cola milk water total

Boys 12 16 4 32

Girls 14 5 9 28

Altogether cola = 14 + 12 = 26

8 0

2 years ago

A fair coin is flipped 120 times. Estimate the expected number of ‘heads’.

Bumek [7]

when coin is flipped 5 times probability is 1/2

so coin heads comes out to be 2.5

This is a binomial distribution with a probability of success = 0.5 (fair coin).

n=10

mean = E[x] = np =10*0.5 =5

7 0

2 years ago

Read 2 more answers

Which uses a logarithmic scale?

gregori [183]

Answer: Richter Scale

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Find the Surface Area. I need the answer fast.

murzikaleks [220]

Answer:

1615

Step-by-step explanation:

Area of triangle is: A= B•H•1/2

Area of square is A= L•W

39•17•1/2= 331.5

331.5•4= 1326

17•17= 289

Add the square area to the area of the triangles

289+ 1326= 1615

hope this helps chu <3

8 0

3 years ago

Read 2 more answers

Help please! Could you explain it too?

Anettt [7]

Answer:

a) not proportional

b) proportional; k = $-\frac{3}{5}$

Step-by-step explanation:

a) for any proportional equation, the line must pass through the origin. The equation in a) is y = 4x + 1, and the '+1' is the y-intercept. This means that the line does not pass through the origin, so x and y cannot increase by the same amount (i.e. they are not proportional).

Another way to determine this is is to use the y = kx base. If you have an equation that fits that it's likely proportional.

Here, if the equation was only y = 4x then it'd be proportional because u can see that k = 4. This is not the equation though, and the 4x + 1 doesn't fit to the y = kx formula so it can't be proportional.

b) straight away you can see that there's no 'c' term (y = mx + c) which means the y-intercept is 0, so the line passes through the origin. While this does not immediately mean the line is proportional, you can make sure that it is by checking it fits with the y = kx equation.

y = -(3/5)x fits with y = kx, with k being -3/5

3 0

2 years ago