Answer:
x=4
Step-by-step explanation:
Via the formula of the line y = ax+b.
To calculate a:
a = (-6+1.5)/(-4-2) = (-5.5)/(-6)=55/60.
As the line go through the point (-4,-6), we have
-6 = (55/60)(-4) +b
-6 = -55/15 + b
b= -6 + 55/15 = (-90+55)/15 = -35/15 = -7/3
Then, the equation of the line is
y = (55/60)x - 7/3.
In order to find the zero, we plug y = 0 and obtain:
(55/60)x = 7/3
x = (60*7)/(55*3) = 2.54
