I do not understand how to do this problem please help!

Question

undeadknight26 · Answer

6.	Below is a graph that represents the total profits for a third month. Write the equation of the line that represents this graph. Show your work or explain how you determined the equations.

undeadknight26 · Answer

attachment

undeadknight26 · Answer

The first month they made 1200 and the second month they made 1500...

undeadknight26 · Answer

@hartnn @amistre64 @hba @KattGirl14 @cwrw238 @CGGURUMANJUNATH please help.

amistre64 · Answer

you need to review your material about finding the equation of a line between 2 points.  or at least let us know what you can recall about it.

undeadknight26 · Answer

would this help me?

graph a line using the slope-intercept form:
Manipulate the equation into slope-intercept form, y = mx + b.
Identify and plot the y-intercept of the line. Remember, the y-intercept is b. Don't forget: The sign goes with the number.
Identify and use the slope of the line to find a second point. Remember, the slope is m. Don't forget: Starting at the y-intercept, the numerator tells you the rise (count up if positive and down if negative), the denominator tells you the run (count right.)
Draw a straight line through the two points to complete the graph.
Linear Functions:
A linear function is a function that is defined by a linear equation.
To write a linear function with function notation, first write it in slope-intercept form, and then replace y with f(x).
The graph of a linear function is all points (x, f(x)), where x is in the domain of the function.

undeadknight26 · Answer

@amistre64

amistre64 · Answer

hmm, thats hard to read thru at my age ...

spose we have 2 points:  (a,b)  and (p,q)

we can use either point to form an equation with such that:

y = m(x-a) + b  or  y = m(x-p) + q

m is the slope between the points which has a formula:$$m=\frac{a-p}{b-q}$$

amistre64 · Answer

id pick some easy points like (0,300) and (450,0)  to play with

amistre64 · Answer

y = m(x-0) + 300

m = ... ugh, my initial thought is flipped upside down 

m = 300-0
       ------   =  - 300/450  and simplify
        0 - 450

amistre64 · Answer

300/450

30/45

6/9

2/3

y = 2/3 x + 300 seems to be a good fit for the line