Let's turn a graph into an equation. 1.
What is your y-intercept?
(Where does your line touch the y-axis?)
2.
Start at your y-intercept and count down/over until you
get to another point on your line.
3.
Can you simplify that fraction?
4.
Plug your y-intercept and your slope into your equation.
y = mx + b
Final
-51

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

they charge the same amount at 20 minutes.

step-by-step explanation: