Ask your own question, for FREE!
Mathematics 12 Online
OpenStudy (anonymous):

Please help will Medal! Make a table and graph the function.. y = 4x + 2

OpenStudy (anonymous):

when y = 0, what is x?

OpenStudy (anonymous):

You find this by simply looking at the the last calue, when y is 0, x is 2

OpenStudy (anonymous):

epicness is wrong

OpenStudy (anonymous):

Now, you know the y intercept on your graph will be on the 2

OpenStudy (anonymous):

omg, you know i m right

OpenStudy (anonymous):

0=4x+2

OpenStudy (anonymous):

well, i mean when x is zero

OpenStudy (anonymous):

-2=4x

OpenStudy (anonymous):

sry

OpenStudy (anonymous):

x=-1/2

OpenStudy (anonymous):

what?

OpenStudy (anonymous):

make a table by plugging in numbers for y and then solving for x

OpenStudy (anonymous):

so lost :(

OpenStudy (anonymous):

This will give you coordinates to make the graph

OpenStudy (anonymous):

Find what x is when y = 1

OpenStudy (anonymous):

im sorry i dont understand

OpenStudy (anonymous):

ok i'll use the example for y = 6

OpenStudy (anonymous):

plug 6 in for y in the equation y = 4x + 2

OpenStudy (anonymous):

This gives you 6 = 4x + 2

OpenStudy (anonymous):

now solve for x

OpenStudy (anonymous):

subtract 2 from both sides

OpenStudy (anonymous):

4 = 4x

OpenStudy (anonymous):

then divide both sides by 4

OpenStudy (anonymous):

1 = x

OpenStudy (anonymous):

so now we have the coordinate (1,6) which we can use for the graph

OpenStudy (anonymous):

|dw:1432254563601:dw|

OpenStudy (anonymous):

So (1,6) represents one point on the graph

OpenStudy (anonymous):

now we plug in other values for y or x to find other coordinates

OpenStudy (anonymous):

making it possible to graph the line

OpenStudy (anonymous):

thanks

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!