The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.
The answer is:
(3x-2)(x+3)
each book cost 1.25
divide
7.50÷6= 1.25
10÷8= 1.25
this is the proportion
