Write an equation for
(2, 1), and y increases by 4
when x increases by 1.

Step-by-step explanation:

The equation for a line can be written in slope-intercept form:

Where is the slope of the line and is the y-intercept.

Since we know " increases by when increases by ", that tells us that the slope of the line is .

To figure out the y-intercept, , we can plug in the coordinates given in the problem to the point that the line passes through,

Therefore, the equation of the line is

ian gone lie this got me confused

step-by-step explanation:

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: