Answer:
y = 9x + 78
Explanation:
The problem says to write the equation in terms of y, so the number of lirns will be the y-axis, and the number of weeks will be the x-axis.
Given this, we know two points will be (6, 132) and (10, 168). This is all we need to plot a line!
We need to write it as y = mx + b, where m is the slope and b is the y-intercept. Let's start with the slope. This is rise over run, so we have
, which is 9. Now we need to find the y-intercept.
We have found the slope, so we can plug that into m, to get y=9x+b. We can plug in a point for x and y, let's choose (6, 132). This gives us
, so b = 78. Now we have solved for m and b! This gives us y = 9x + 78.