Thread: Help needed with Functions and Graphs

Alright, the question is:

Draw the graph of y = 3x + 60/x - 35.
Range : x= 1.5 less than or equal to 10
y= 9.5 to 1
Find Gradient
**Find solutions to the equation 4x + 60/x = 40 by drawing a suitable line.

My attempted solution:

Graph drawn,
Gradient = 10
** i have solved the question ' Find solutions to the equation 4x + 60/x = 40 by drawing a suitable line.' by other means but i just do not know where to draw a straight line at. how does this relate to y = 3x + 60/x - 35 ??

please help...

kind regards
tgpnlyt7095

Originally Posted by tgpnlyt7095

Alright, the question is:

Draw the graph of y = 3x + 60/x - 35.
Range : x= 1.5 less than or equal to 10
y= 9.5 to 1
Find Gradient
**Find solutions to the equation 4x + 60/x = 40 by drawing a suitable line.

My attempted solution:

Graph drawn,
Gradient = 10
** i have solved the question ' Find solutions to the equation 4x + 60/x = 40 by drawing a suitable line.' by other means but i just do not know where to draw a straight line at. how does this relate to y = 3x + 60/x - 35 ??

please help...

kind regards
tgpnlyt7095

Dear tgpnlyt7095,



Since,

Therefore,

This is the straight line that you have to draw.

Originally Posted by Sudharaka

Dear tgpnlyt7095,



Since,

Therefore,

This is the straight line that you have to draw.

Thanks a ton, you helped with the thinking process that i failed to deliver at just now .