Substract 6 to both sides and you get 36 =-2d then you use the multiplicative inverse and d=-18.
Answer:
y = -6x + 2
Step-by-step explanation:
Slope intercept form: y = mx + b
m is the slope
b is the y-intercept
The line pictured goes down 6 for each 1 it moves to the right, slope is rise over run, in this case, -6/1 or just -6
The y-intercept is the point that the function crosses the y-axis, in this case 2
Plug those in to get:
y = -6x + 2
1 chip is $10
So, for 79 chips,
= 79 x $10
= $790
