4.) A concert charges $24.50 per daily adult ticket and $13.75 per child's ticket. A group of 90 people paid $1560.00 for ticket
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For this case we have that by definition, the equation of a line in the slope-intersection form is given by:
Where:
m: It's the slope
b: It is the cutoff point with the y axis
We find the slope with the given points:
Thus, the line is given by:
We substitute a point to find "b":
Finally, the equation is:
Answer:
