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How many solutions does the system have?

12x-15y=18
4x-5y=6

User Majordomo
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1 Answer

4 votes

Answer:

In this case, the system of equations has no solution.

Explanation:

To determine how many solutions the system of equations has, you can examine the relative slopes of the two lines. The system is as follows:

12x - 15y = 18

4x - 5y = 6

You can simplify the equations by dividing both sides of each equation by their respective coefficients to put them in slope-intercept form (y = mx + b), where m represents the slope:

From equation (1):

12x - 15y = 18

-15y = -12x + 18

y = (4/5)x - 6/5

From equation (2):

4x - 5y = 6

-5y = -4x + 6

y = (4/5)x - 6/5

The two equations have the same slope (4/5), and their y-intercepts are also the same (-6/5). This means the two lines are parallel. When parallel lines have the same slope but different y-intercepts, they do not intersect, and there is no solution to the system of equations.

So, in this case, the system of equations has no solution.

User Jayesef
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7.2k points