All categories

2 years ago

Consider the line 9x – 7y=-8.

Mathematics

1 answer:

never [62]2 years ago

4 0

Answer:

Step-by-step explanation:

Before you can answer you have to solve the equation for y.

Y = 9/7 x+8/7

Parallel lines have the same slope so would also be 9/7

Perpendicular lines have opposite reciprocal slope so would be -7/9

You might be interested in

Please help! The answer to this is 2 but I don't know how to actually solve it so can someone please show the work for this?

s344n2d4d5 [400]

Answer:

Step-by-step explanation:

basically logarithms are like reverse exponents

log7, 49 is basically asking 7 to the what gets you 49

because of that its 2 because 7^2 gets you 49

4 0

2 years ago

Read 2 more answers

Let $P$ and $Q$ be constants. The graphs of the lines $x + 5y = 7$ and $15x + Py = Q$ are perpendicular and intersect at the poi

Marta_Voda [28]

Answer:

Step-by-step explanation:

Given

Two lines:

$x + 5y = 7$

$15x + Py = Q$

are perpendicular to each other and intersect at point (-8,3).

To find: (P, Q)

Solution:

The two lines intersect at (-8,3).

It means, the equation of line will be satisfied when we put value of x = -8 and y = 3

Putting in the second equation, we will get an equation in P and Q:

$15\times (-8) + P \times 3 = Q\\\Rightarrow 3P = Q +120 ..... (1)$

Given that two lines are perpendicular.

It means the product of their slopes will be equal to -1.

i.e. $m_1\times m_2=-1$

Slope of a line of the form $ax+by+c=0$ is given as:

$m=-\dfrac{a}{b}$

So, slopes of given lines are:

$m_1=-\dfrac{1}{5}\\m_2=-\dfrac{15}{P}$

Using the condition:

$-\dfrac{1}{5}\times \dfrac{-15}{P}=-1\\\Rightarrow P = -3$

Putting the value of P in equation (1):

$\Rightarrow 3\times (-3) = Q +120 \\\Rightarrow Q = -9-120 = -129$

So, answer is <em>(-3, -129)</em>

7 0

2 years ago

Uhm ian askin fo a lot buh ,,, uh someone add me on Rblx , XxColdTyXx is da user

ch4aika [34]

Answer:

Mk! I will when I get my account back!

Step-by-step explanation:

4 0

1 year ago

Complete the square to re-write the quadratic function in vertex form:<br> y = x2+ 10x - 2

Blababa [14]

Answer:

Step-by-step explanation:

$y = x^2+ 10x - 2\\\\y = x^2+ 2\cdot x\cdot5+5^2-5^2 - 2\\\\y=(x+5)^2-25-2\\\\y=(x+5)^2-27$

8 0

2 years ago

Ashley is preparing for a horse riding competition. She has trained her horse for 6 hours and has completed 240 rounds. At what

lyudmila [28]

Answer:

Step-by-step explanation:

4 0

2 years ago