Answer:
10 for each side so 40 tiles
Step-by-step explanation:
<span>12x +3y = 12
y = -4x +5
We can convert the first equation to the same form as the second (y=mx+b, or slope-intercept).
12x +3y = 12
3y = -12x +12
y = -4x +4
Comparing the simplified first equation y = -4x +4 to the second equation y = -4x + 5, we see that both have the same slope (m = -4), but different y-intercepts (b = 4, b = 5). This means they are parallel lines, or an inconsistent system. There are no solutions.</span>
The slope is -2/2 because to find the slope of two ordered pairs you do the equation:
Y2 - Y1
———-
X2 - X1
Now to solve this equation you have to take the # of pencils (985) and subtract it from the # of pencils left
985-559=425
$26 pencils were sold
