how do you solve and graph y=-2x+1
The equation is in slope-intercept form, so you
know that the line passes through the point (0, 1).
The slope is -2, which means that for every unit
to the right (positive x), the line drops two units
(negative y). From that, you can determine
that (1, -1) is on the line, (2, -3) is on the line,
and so on. To get a good distance between two
points to define your line, pick a x value at least
ten units from the first point. At x = 10, you will
have moved 10 units, so you would move -20
units down. -20 below 1 is -19, so your second
point is (10, -19). Plot that and draw a line through
that point and the y-intercept.