The problem is to solve the given system of linear equations: $2x + 7y = 22$ (1) $5x + 8y = 17$ (2) And then describe the system of equations.

AlgebraLinear EquationsSystems of EquationsElimination MethodSolution of EquationsIndependent EquationsConsistent Equations
2025/3/17

1. Problem Description

The problem is to solve the given system of linear equations:
2x+7y=222x + 7y = 22 (1)
5x+8y=175x + 8y = 17 (2)
And then describe the system of equations.

2. Solution Steps

We can solve the system of equations using either substitution or elimination. Let's use elimination. Multiply equation (1) by 5 and equation (2) by 2 to eliminate xx.
5(2x+7y)=5(22)    10x+35y=1105(2x + 7y) = 5(22) \implies 10x + 35y = 110 (3)
2(5x+8y)=2(17)    10x+16y=342(5x + 8y) = 2(17) \implies 10x + 16y = 34 (4)
Subtract equation (4) from equation (3):
(10x+35y)(10x+16y)=11034(10x + 35y) - (10x + 16y) = 110 - 34
19y=7619y = 76
y=7619=4y = \frac{76}{19} = 4
Substitute y=4y = 4 into equation (1):
2x+7(4)=222x + 7(4) = 22
2x+28=222x + 28 = 22
2x=22282x = 22 - 28
2x=62x = -6
x=3x = -3
So the solution is x=3x = -3 and y=4y = 4. The solution to the system is (3,4)(-3, 4).
The system is independent and consistent because the two lines intersect at one point.

3. Final Answer

The solution to the system is (-3, 4).
The equations are independent and consistent. Their graphs intersect at one point.