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@Maizetycorn HELP with my previous questions pleaseeee! URGENT

A line has a slope of -7 and includes the points (-1,-8) and (z,6). What is the value of z?
z=

User Woany
by
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1 Answer

5 votes

Answer:

z=-3

Explanation:

The given line has slope m=-7.

The line passes through (-1,-8) and (z,6).

We use the slope formula:


m=(y_2-y_1)/(x_2-x_1)

We substitute
x_1=-1,
y_1=-8,
x_2=z ,
y_2=6 and
m=-7 to get:


-7=(6--8)/(z--1)


-7=(6+8)/(z+1)


-7=(14)/(z+1)


-7(z+1)=14

Expand
-7z-7=14


-7z=14+7


-7z=21


z=-3

User Ironmaurus
by
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