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Mathematics 19 Online
OpenStudy (anonymous):

I NEED HELPPPP omg -_-

OpenStudy (anonymous):

y = 2x + 1 y = -1/2x + 1

jimthompson5910 (jim_thompson5910):

y = -1/2x + 1 2x+1 = -1/2x + 1 ... Plug in y = 2x+1 4x+2 = -x + 2 ... Multiply EVERY term by the LCD 2 to clear out the fractions Keep going to solve for x

OpenStudy (anonymous):

and how do i graph it

jimthompson5910 (jim_thompson5910):

Graphing y = 2x+1 Start at the y-intercept (0,1) The slope is 2, or 2/1, so go 2 units up and 1 unit to the right to get the next point (1, 3) Then draw a line through (0,1) and (1,3) to graph y = 2x+1

jimthompson5910 (jim_thompson5910):

Graphing: y = -1/2x + 1 Start at the y-intercept (0,1) The slope is -1/2, so go 1 unit down and 2 units to the right to get the next point (2, 0) Then draw a line through (0,1) and (2,0) to graph y = -1/2x+1

OpenStudy (anonymous):

what about y= 1/5x - 3 y= -5x +6

jimthompson5910 (jim_thompson5910):

What's the y-intercept of y= 1/5x - 3

OpenStudy (anonymous):

-3

jimthompson5910 (jim_thompson5910):

so the point (0, -3) is on the graph

jimthompson5910 (jim_thompson5910):

the slope of y= 1/5x - 3 is what?

OpenStudy (anonymous):

and (0,6) for the next one

OpenStudy (anonymous):

1/5 is the slope

jimthompson5910 (jim_thompson5910):

so you go up 1 unit and to the right 5 units to go from (0, -3) to (5, -2) Therefore, the two points (0, -3) and (5, -2) are on the line y= 1/5x - 3

OpenStudy (anonymous):

and what about the next one

OpenStudy (anonymous):

(0,6) right?

jimthompson5910 (jim_thompson5910):

the slope of y= -5x +6 is ____

OpenStudy (anonymous):

-5

jimthompson5910 (jim_thompson5910):

or -5/1

jimthompson5910 (jim_thompson5910):

this means you go down 5 units and to the right 1 unit

jimthompson5910 (jim_thompson5910):

to go from (0, 6) to (1, 1)

jimthompson5910 (jim_thompson5910):

this means that the two points (0, 6) and (1,1) are on the line y= -5x +6

OpenStudy (anonymous):

thank you!!

jimthompson5910 (jim_thompson5910):

yw

OpenStudy (anonymous):

when its 3/1

OpenStudy (anonymous):

u go 3 down and 2 to the right

OpenStudy (anonymous):

1*

OpenStudy (anonymous):

nvm got it thanks~~~~~~~~~~~~

OpenStudy (anonymous):

!!!!!!!!!!!!!!!!*

jimthompson5910 (jim_thompson5910):

3/1 means: go up 3 and over 1 to the right

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