Question

Given two lines 𝐿1: π‘₯ + 4𝑦 = βˆ’10 and 𝐿2: 2π‘₯ βˆ’ 𝑦 = 7. i. Find the intersection point of 𝐿1 and 𝐿2.

68

likes
340 views

Answer to a math question Given two lines 𝐿1: π‘₯ + 4𝑦 = βˆ’10 and 𝐿2: 2π‘₯ βˆ’ 𝑦 = 7. i. Find the intersection point of 𝐿1 and 𝐿2.

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)
What is the resultant displacement when a vector of magnitude 85 units is added to a vector of magnitude 120 units at an angle of 30 degrees?
+
Question: How can the distributive property be used to factor out the greatest common factor of 14x^2 + 28x - 42?
+
Question: Graph the exponential function y = 2^x. Identify the x-intercept(s), y-intercept, and the point where the graph intersects the line y = 8.
+
New questions in Mathematics
calculate the derivative by the limit definition: f(x) = 6x^3 + 2
find the value of the tangent if it is known that the cos@= 1 2 and the sine is negative. must perform procedures.
5(4x+3)=75
How many kilometers does a person travel in 45 minutes if they move at a rate of 8.3 m/s?
Using the integration by parts method, calculate the integral of [xΒ².ln(1/x)]dx: x 4 /4 xΒ³/6 x 4 /8 xΒ³/3 x 4 /6
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?
A job takes 9 workers 92 hours to finish. How many hours would it take 5 workers to complete the same job?
There are 162 students enrolled in the basic mathematics course. If the number of women is 8 times the number of men, how many women are there in the basic mathematics course?
RaΓΊl, Gilberto and Arturo are playing golf; The probabilities of winning for each one are as follows: (RaΓΊl wins) = 20% (Gilberto wins) = 0.05% (Arturo wins) = ΒΎ%. Perform operations and order events from least to most probable.
If X1 and X2 are independent standard normal variables, find P(X1^2 + X2^2 > 2.41)
Convert 9/13 to a percent
The maximum gauge pressure of a hydraulic ramp is 16 atm, with a support area whose diameter is 20 cm. What is the mass of the heaviest vehicle that can be lifted?
MAKING AN ARGUMENT You use synthetic division to divide f(x) by (x βˆ’ a) and find that the remainder equals 15. Your friend concludes that f (15) = a. Is your friend correct? Explain your reasoning.
X^X =49 X=?
Square root of 169 with steps
5a-3.(a-7)=-3
Beren spent 60% of the money in her piggy bank, and Ceren spent 7% of the money in her piggy bank to buy a joint gift for Deren, totaling 90 TL. In the end, it was observed that the remaining amounts in Ceren and Beren's piggy banks were equal. Therefore, what was the total amount of money that Beren and Ceren had initially? A) 120 B) 130 C) 150 D) 160 E) 180
Find the distance from the point (2,-1) to the line 2x-5y+10=0
To apply a diagnostic test, in how many ways can 14 students be chosen out of 25? if the order does not matter
Find the number of liters of water needed to reduce 9 liters of lotion. shave containing 50% alcohol to a lotion containing 30% alcohol.