Question

How do you graph `y=-2x-4`?

Answer 1

graph{y=-2x -4 [-10, 10, -5, 5]}

Explanation:

`-2x` is the gradient (or steepness) of the line. The gradient tells us that for `1` square to the right, how many squares we go up or down. With a negative number, we go downwards, and with a positive one we go up. this means that for every `1` square we go to the right, we go down `-2`.

`-4` is the y-intercept, which shows us at which point on the y-axis (vertical axis) the line crosses. Therefore, the line will cross the y-axis at `-4`.

to draw the line, plot a point on he coordinate `(0,-4)`, then go `1` box across and `2` down, and plot a second point. Continue to do this until you no longer can. Then work the opposite direction, going `1` to the left and `2` up