All categories

3 years ago

Which 1 is the equation 3x+9y=7 that passes through (6,4)

Mathematics

1 answer:

algol [13]3 years ago

6 0

Perpendicular lines have an negated inverse slope compared to a given line. so we need to find slope of line:
3x + 9y = 7
y = -1 / 3 x + 7

so the opposite of -1/3 is 1/3. flip the fraction to get the inverse and it is 3/1 or 3. 3 is then the slope of perpendicular line. now we see which one will work with it. there are 2 possible
3x+ 4 = y
3x - 14 = y

plug in the point on line and see if it works
3 (6) + 4 = 4 nope

3 (6) -14 = 4 yes
so 3x - 14 = y

You might be interested in

Find the least number with factors 11, 23, and 37.

stich3 [128]

23,11,37

least numbers

6 0

3 years ago

Select the outlier in the data set. 3 71 77 82 91 92 94 98

Aleks [24]

Answer:

Step-by-step explanation:

3 because it’s further way from 70-90

6 0

3 years ago

Rate of Change: Based on the equation determine the rate of change by looking at the coefficients.

Svetlanka [38]

Answer:

1) -1

2) 3

3) 2

7 0

3 years ago

X+4y=30 system by substitution X-2y=0

Dmitry [639]

Answer:

x=10, y=5

Step-by-step explanation:

For substitution, you always want to get the variable alone. The second equation (x-2y=0) will be easier to substitute into the first equation.

x-2y=0

x=2y

You can substitute 2y as x on the first equation (x+4y=30).

2y+4y=30

6y=30

y=5

Plug y=5 into any equation.

x+4(5)=30

x+20=30

x=10

3 0

3 years ago

8. 3x+10=14y 8х -7y= 34

Fofino [41]

Answer:

hey, are these two questions or one simultaneous question?

3 0

3 years ago