Graph 1st represents the given pair of equation.
What is system of equation ?
Two equations to be solved together where the solution must satisfy all the equations in the system is called system of equation.
Solving the equations , we get
y= 2x + 1 equation 1
y= -4x + 7 equation 2
multiplying equation 1 by 2
2y = 4x + 2
y = -4x + 7
3y = 9
y= 3
putting value of y in equation 1
3 = 2 x + 1
x = 1
The coordinates where both the lines intersect is (1,3)
Hence , the correct option is option a)
Learn more about system of equation:
https://brainly.com/question/12895249?referrer=searchResults
#SPJ2
