GCSE Maths Question - Have a look at the screenshot attached

Hi,

I have solved it simultaneously but have trouble understanding how to draw the graph. If someone could draw it from or aid me in how to do it. It would be a pleasure.

(edited 2 years ago)

Reply 1

the bear

ermm there is no attachment :redface:

Reply 2

realboss_sh

Original post by the bear

ermm there is no attachment :redface:

my bad I have uploaded now! Thanks for letting me know!

Reply 3

the bear

ok it is there now....

if you have a statement

"5x + 2y = 3.6"

you can rearrange it into the form

y = 1.8 - 2.5x

which is the equation of a straight line....

Reply 4

realboss_sh

Original post by the bear

ok it is there now....

if you have a statement

"5x + 2y = 3.6"

you can rearrange it into the form

y = 1.8 - 2.5x

which is the equation of a straight line....

still don't get it please could you solve the problem and draw the graph.

Reply 5

the bear

Original post by realboss_sh

still don't get it please could you solve the problem and draw the graph.

unfortunately we are only allowed to give hints and that :redface:

Reply 6

davros

Original post by realboss_sh

still don't get it please could you solve the problem and draw the graph.

It's against forum rules to post solutions, but surely you have plotted graphs of the form y = mx + c or alternatively ax + by = c? You just need to draw a couple of straight lines representing the info you're given and find their intersection :smile:

Reply 7

mlee531

Just use the form y = mx + c. If you rearrange the two equations you have into that form, you should be able to just find the intersection by equating the two lines, and therefore draw the graph.