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Ede4ka [16]
3 years ago
15

Evaluate the expression when x=3 and y=-6 7y-x

Mathematics
2 answers:
Alenkasestr [34]3 years ago
8 0
7(-6) - 3
-42 -3
-45
Your answer is -45
stira [4]3 years ago
8 0
7y-x
=7(-6)-3
=-42-3
=-45
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Write The line through (0,-2) and (4,6) in point form
Anna35 [415]
(0,-2)(4,6)
first we find the slope by using the slope formula : slope(m) = (y2 - y1)/(x2 - x1)

slope(m) = (6 - (-2) / (4 - 0) = (6 + 2)/4 = 8/4 = 2

point slope form : y - y1 = m(x - x1)... 2 answers are possible 

y - y1 = m(x - x1)
slope(m) = 2
using points (0,-2)....x1 = 0 and y1 = -2
y - (-2) = 2(x - 0)
y + 2 = 2(x - 0) <=== here is one answer

y - y1 = m(x - x1)
slope(m) = 2
using points (4,6)...x1 = 4 and y1 = 6
y - 6 = 2(x - 4) <== here is the other answer


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