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Mathematics 21 Online
OpenStudy (anonymous):

What is the equation of the graphed line? A. y=-5\2x B.y=-2\5x C.y=2\5x D.y=5\2x

OpenStudy (anonymous):

heres the graph

OpenStudy (mathmale):

Please take a quick look at the graph and determine the y-intercept of this line, and also determine the slope of the line. Denoting "y-intercept" by b and "slope" by m, the desired equation (function) for the given line is y = mx + b.

OpenStudy (anonymous):

i will medal

OpenStudy (mathmale):

Really, that's irrelevant. I'm not motivated by medals. I want to help you. Please answer my questions or ask some of your own. I'd like to end this discussion with your having become able to solve this type of problem by yourself.

OpenStudy (mathmale):

Identify the point at which the line crosses the y-axis. This point is (0,b). What is the value of b?

OpenStudy (anonymous):

sorry let me think

OpenStudy (anonymous):

sorry im a slow learner an this make no sense to me

OpenStudy (mathmale):

Looking at the graph, can you identify the x-axis and the y-axis?

OpenStudy (anonymous):

well the the line goes right threw the the -1 and my answers is negative so i have cut some answers out right?

OpenStudy (mathmale):

You've tried, but you haven't addressed my question. The x-axis is the horizontal one and the y-axis is the vertical one. If I give you a point such as (1, 2), you are to start at the origin and move one unit to the right (since the x-coordinate is 1). From (1,0), move UP 2 units (since the y-coordinate is 2). Can you graph that using the Draw screen, below?

OpenStudy (mathmale):

|dw:1447951930800:dw|

OpenStudy (mathmale):

The point where the x- and y-axes intersect is called the ORIGIN and is represented by (0,0).

OpenStudy (anonymous):

|dw:1447999094368:dw|

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