How do you solve #x + 4y = -1# and #2x - y = 7#?
1 Answer
The lines intersect at the point
Refer to the explanation for the process.
Explanation:
Solve system of equations
Equation 1:
Equation 2:
Both equations are linear equations in standard form:
The point
I will use the substitution method to solve the system.
Solve Equation 1 for
Subtract
Substitute
Expand.
Add
Simplify.
Divide both sides by
Simplify.
To solve for
Simplify.
Add
The point of intersection between the two lines is
graph{(4y+x+1)(-y+2x-7)=0 [-10, 10, -5, 5]}