Respuesta :

When a graph of any form of equation intersect the x-axis, this automatically means that y = 0. And then we solve for x to find the coordinates of the point of intersection, or just the value of x.
y = -3x - 18
-3x - 18 = 0
We add 18 in both sides so we can get the variables on a side and the numbers on the other:
-3x - 18 + 18 = 0 + 18
-3x = 18
Then you divide each side by -3 to get x alone on a side and its value on the other:
(-3x)/-3 = 18/-3
x = -6.

So the graph of y= -3x-18 intersect the x -axis when y=0 and x=-6.

(I've added a picture of the graph of y= -3x-18 under the answer)

Hope this Helps! :)
Ver imagen jackmac1
abidemiokin

The point where the graph of y=-3x-18 intersect the x-axis is (-6, 0)

Given the equation of a graph expressed as y = -3x - 18

The point where the line cuts the x-axis is the point where the value of y is zero.

Substitute y = 0 into the expression to get x

y = -3x - 18

0 = -3x - 18

3x =-18

x = -18/3

x = -6

Hence the point where the graph of y=-3x-18 intersect the x-axis is (-6, 0)

Learn more here:https://brainly.com/question/19859423

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