how to solve x+3y=11?

Question

back to school. we get reviews. and i don't remember anything from last year. i know that it's an easy equation but please, HELP.

Answer 1

x + 3y = 11 has infinitely many solutions:
x = 11 - 3y, pick any value for y, subtract 3 times that from 11, that's the x that goes with it.

so you don't solve this, but you might graph it.

Answer 2

to actually solve it you need another equation. (simultaneous eqns)

to draw the graph, you need to make it follow the format
y = Mx + C
where M is the gradient of the graph, and C is the y-intersect

x + 3y = 11
3y = -x +11
y = -1/3 x + 11/3
so gradient is 1/3 and intersect is 11
then just sub in values for x to get y so you have 3 points to plot, intersect already gives 1
eg. 1. (0, 11/3)

now 3 points, draw your graph

Answer 3

3y= -x +11

y = (-x + 11)/3

y= -x/3 + 11/3

This is a linear solution.

Answer 4

For x:
x = 11 - 3y

For y:
3y = 11 - x
y = (11 - x) / 3

We have nowhere to go after these.