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)
Question: What is the Fundamental Theorem of Calculus?
+
What is the measure of the central angle of a circle, given that the intercepted arc measures 40 degrees?
+
What is the slope of a line passing through the points (-2, 4) and (5, 9)?
+
New questions in Mathematics
How do you think the company has increased or decreased its income?
a bank finds that the balances in its savings accounts are normally distributed with a mean of $500 and a standard deviation off of $40. What is the probability that a randomly selected account has a balance of more than $400?
[(36,000,000)(0.000003)^2]divided(0.00000006)
30. In 8 s, a car that starts from rest and moves with uniformly accelerated motion has achieved a speed of 72m/s. How much space must it travel to reach a speed of 90m/s? Sunshine: 450 m
A company that manufactures personal hygiene items purchases machinery for $220,000 that is considered to last 7 years; it is estimated that at the end of the period it will have a salvage value of $1000. Find: to. The depreciation rate. b. The book value at the end of the sixth year.
I need to know what 20% or ยฃ3292.75
The thermal representation f(x) = 20 times 0.8 to the power of x is known from an exponential function f. Specify the intersection point with the y-axis
Three squares have a total area of 35.25 ๐‘๐‘š2 . The larger square has twice the side-length of the middle-sized square. The smaller square has its side length exactly 0.5 cm smaller than the middle-sixed square. Find the side lengths of each of the three squares.
form a key for your lock containing the numbers 2 2 5 8 How many different keys can you form?
Calculate the minimum size of a simple random sample assuming a sampling error of 5% assuming that the population size is 100 elements
factor the polynomial completely over the set of complex numbers b(x)=x^4-2x^3-17x^2+4x+30
94 divided by 8.75
2x-5-x+2=5x-11
00 piece jigsaw puzzle. the completed puzzle is 10x10. each piech connects to at least 2 other pieces. i plan to assemble by taking pieces out of box one by one. if i've already taken out 2 pieces that dont directly connect, what is the minimum number of additional pieces that i need to draw to in order to guarentee that the original 2 pieces connect?
Find I (Intrest) using simple interest formula of 17700 @ 15% for 4 years
0<x<2ฯ€ aralฤฑฤŸฤฑndaki f(x)=xรท2 fonksiyonunun 0 < x < 4ฯ€ iรงin grafiฤŸini รงiziniz ve 0<x<2n iรงin Fourier seri dรถnรผลŸรผmรผnรผ gerรงekleลŸtiriniz.
a coffee shop has 9 types of creamer and 11 types of sweetener. In how any ways can a person make their coffee?
the length of the fenced in area is to be 5 ft greater than the width and the total amount of fencing to be used is 89 ft find the width and length
A small box measures 10 in. by 4 in. by 6 in. high. Find the volume of the box.
To apply a diagnostic test, in how many ways can 14 students be chosen out of 25? if the order does not matter