Question
Review the graphs of a system of two linear equations in two variables: 4x+3y=15 and y=x+5. Find the solution to both equations.
(1 point)
The intersection point is ().
(1 point)
The intersection point is ().
Answers
Answered by
GPT 3.5
The solution to both equations can be found by finding the x-coordinate and y-coordinate of the intersection point of the two graphs.
To find the intersection point, we can set the two equations equal to each other:
4x + 3y = 15
y = x + 5
Substituting the expression for y from the second equation into the first equation, we have:
4x + 3(x + 5) = 15
Expanding and simplifying:
4x + 3x + 15 = 15
7x + 15 = 15
7x = 0
x = 0/7
x = 0
Now substitute the value of x back into one of the original equations to solve for y:
y = 0 + 5
y = 5
Therefore, the solution to both equations is (0, 5).
To find the intersection point, we can set the two equations equal to each other:
4x + 3y = 15
y = x + 5
Substituting the expression for y from the second equation into the first equation, we have:
4x + 3(x + 5) = 15
Expanding and simplifying:
4x + 3x + 15 = 15
7x + 15 = 15
7x = 0
x = 0/7
x = 0
Now substitute the value of x back into one of the original equations to solve for y:
y = 0 + 5
y = 5
Therefore, the solution to both equations is (0, 5).