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Is this f(x) = 8x - 7 OR perhaps f(x) = -8x - 7?
I forgot the = so it is F(X)=-8x-7
comparing this with y=mx+c
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so when they ask for the slope i put (0-7) and intercept?? 8
The slope-intercept form of writing the equation of a line is the following:
y = mx + b where m is the slope and b is the y-intercept.
Compare your function to this form.
y = -8x - 7 --> yours
y = mx + b --> general form
Comparing, you see that m = -8 and b = -7. Because b is the y-intercept, it has an x-coordinate of 0 which would give it the ordered pair (0, -7). Most people just say that the y-intercept is 7. But, if you need to use the y-intercept in a calculation, you would want to know how to write it as (0,-7).