Question

what is an equation of the line with slope -3 that passes through (2,4)

Answer 1

To make an equation for a graph, it has to fit into these "foundations":

y=mx+b

The m is the slope, and the b is the y intercept. The x is the variable, and the y is... well, the y. Those stay the same, except for m and b.

If you have a slope of -3, you put that in for m:

y=-3x+b

And your y intercept (a.k.a. b):


So now you have:
y=-3x+4

Answer 2

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