Question

Given two lines ๐ฟ1: ๐‘ฅ + 4๐‘ฆ = โˆ’10 and ๐ฟ2: 2๐‘ฅ โˆ’ ๐‘ฆ = 7. i. Find the intersection point of ๐ฟ1 and ๐ฟ2.

68

likes
340 views

Answer to a math question Given two lines ๐ฟ1: ๐‘ฅ + 4๐‘ฆ = โˆ’10 and ๐ฟ2: 2๐‘ฅ โˆ’ ๐‘ฆ = 7. i. Find the intersection point of ๐ฟ1 and ๐ฟ2.

Expert avatar
Gerhard
4.5
94 Answers
To find the intersection point of two lines, we need to solve the system of equations formed by the equations of the lines.

Given:
Line L1: x + 4y = -10
Line L2: 2x - y = 7

We can solve this system of equations by using any method like substitution, elimination, or matrices. Let's solve it using the substitution method.

Step 1: Solve one equation for one variable in terms of the other variable.
From the equation of L2, we can isolate y:
y = 2x - 7.

Step 2: Substitute the expression for the variable in the other equation.
Substitute y with (2x - 7) in the equation of L1:
x + 4(2x - 7) = -10.

Step 3: Simplify and solve for the remaining variable.
x + 8x - 28 = -10
9x - 28 = -10
9x = 18
x = 2.

Step 4: Substitute the value of x back into one of the original equations to find the value of y.
Using L2: 2(2) - y = 7
4 - y = 7
-y = 7 - 4
-y = 3
y = -3.

Therefore, the intersection point of L1 and L2 is (2, -3).

Answer: The intersection point of L1 and L2 is (2, -3).

Frequently asked questions (FAQs)
Find the value of cosec(x) - sec(x) when sin(x) = 1/3 and cos(x) = 2/3.
+
What is the resultant displacement when a vector of magnitude 25 cm is added to a vector of magnitude 18 cm at an angle of 60ยฐ?
+
Math question: Convert 0.00000215 to scientific notation.
+
New questions in Mathematics
a to the power of 2 minus 16 over a plus 4, what is the result?
Find an arc length parameterization of the curve that has the same orientation as the given curve and for which the reference point corresponds to t=0. Use an arc length s as a parameter. r(t) = 3(e^t) cos (t)i + 3(e^t)sin(t)j; 0<=t<=(3.14/2)
Let X be a discrete random variable with range {1, 3, 5} and whose probability function is f(x) = P(X = x). If it is known that P(X = 1) = 0.1 and P(X = 3) = 0.3. What is the value of P(X = 5)?
the value of sin 178ยฐ58&#39;
By differentiating the function f(x)=(xยณโˆ’6x)โท we will obtain
In a store there are packets of chocolate, strawberry, tutti-frutti, lemon, grape and banana sweets. If a person needs to choose 4 flavors of candy from those available, how many ways can they make that choice?
-4y-6(2z-4y)-6
4. Show that if n is any integer, then n^2 3n 5 is an odd integer
If 0101, what is the binary representation of the 4x16 decoder output?
I need to know what 20% or ยฃ3292.75
7. Find the equation of the line passing through the points (โˆ’4,โˆ’2) ๐‘Ž๐‘›๐‘‘ (3,6), give the equation in the form ๐‘Ž๐‘ฅ+๐‘๐‘ฆ+๐‘=0, where ๐‘Ž,๐‘,๐‘ are whole numbers and ๐‘Ž>0.
A warehouse employs 23 workers on firstโ€‹ shift, 19 workers on secondโ€‹ shift, and 12 workers on third shift. Eight workers are chosen at random to be interviewed about the work environment. Find the probability of choosing exactly five first โ€‹-shift workers.
John heโ€™s going to the carnival with his friends. He spends $25 on an admission ticket. He buys 10 games at X dollars each and two boxes of popcorn at Y dollars each. Write an expression to show the total cost of admission game, tickets and popcorn.
ind the z-score for which 72% of the distribution's area lies between -z and z. -1.7417, 1.7417 -1.1538, 1.1538 -1.0803, 1.0803 -2.826, 2.826
17. A loan for $104259 is taken out for 10 years with an annual interest rate of 9.4%, compounded quarterly. What quarterly payment is required to pay the loan off in 10 years? Enter to the nearest cent (two decimals). Do not use $ signs or commas in the answer.
A multiple choice exam is made up of 10 questions; Each question has 5 options and only one of them is correct. If a person answers at random, what is the probability of answering only 3 good questions?
Associate each 2nd degree equation with its respective roots. A) x2+6x+8=0 B)x2-5x-6=0
0<x<2ฯ€ aralฤฑฤŸฤฑndaki f(x)=xรท2 fonksiyonunun 0 < x < 4ฯ€ iรงin grafiฤŸini รงiziniz ve 0<x<2n iรงin Fourier seri dรถnรผลŸรผmรผnรผ gerรงekleลŸtiriniz.
A confidence interval for a population mean has a margin of error of 3.5. a. Determine the length of the confidence interval. b. If the sample mean is 47.8 โ€‹, obtain the confidence interval. a. The length of the confidence interval is?
Sarah is lining a square tray with 1 inch square tiles. the side length of the tray is 9 inches. How many tiles does Sarah need?