slope and graphs

[JERangerman]

how do you match an equation with the graph of the equation?



example: y= 4x

and then there is some graphs i have to choose from

 

[Unco]

Revisit your notes on the standard form of the equation for a straight line: y=mx+c.

If we have y=4x, m must be 4 and c must be 0. That is, the gradient of the line is 4 and the y-intercept is 0 (so the graph cuts through the origin).

I think revisiting your notes is the way to go.

 

[stapel]

In particular, review using slope and intercept to graph, and the connection between positive and negative slopes, on the one hand, and increasing and decreasing graphs, on the other.

A solid grasp of these concepts will likely allow you to answer questions of this sort with nothing more than a quick glance.

Eliz.