How do you graph y=−3x+4?

1 Answer
Gió
Jul 19, 2015

Your graph will be a straight line. You can set values for x and evaluate the correspondent y to find the point(s) used to plot your line.

Explanation:

This equation corresponds graphically to a straight line.
The line is inclined downwards and this can be seen by its slope −3 which is the coefficient of x. This negative slope tells you that every time x increases of 1 unit then y decreases of 3.

The line also cross the y axis at 4.

We can plot the line with two points only that can be found as:
set x=0 then y=4 the y-intercept;
set x=1 then y=−3+4=1
So you get:
enter image source here

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