An equation in two variables (for example y=2x−1) has infinitely many solutions — pairs (x,y).
The graph of a linear equation in two variables is a straight line in the coordinate plane.
Each point on the line is a solution of the equation
Two points are enough to draw the line
It is convenient to solve for y in terms of x
Graph of one linear function y=kx+b.
y = 2x + -1
From the graph: at x = 3, y = 5.
Content is available with subscription.
Get full access to all courses on the platform for one year with a single payment.
▼
Unlike other platforms that charge per course, here you get everything for one price, and after one year of use there will be no automatic charge for the following year.