Find the input (x) of the function y=3x-7 if the output (y) iis 5

Answer is in the file below

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Ello there,

The following question is asking for us to determine the x value if the y value is 5.

In order for us to solve this we start by plugging in 5 for the y value:

5 = 3x - 7

Now we add 7 to both sides:

12 = 3x

Then we divide both sides by 3:

4 = x

Therefore, when the output is 5 the input has to be 4.

Hope I helped,

Ari

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

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