A few days ago
Stuck on this math problem. Some help would be great. Thanks?
Write the equation of the line passing through each of the given points with the indicated slope.
Give your result in slope-intercept form, where possible.
a. (-1, 3) and (4, -2)
b. (2, -3) and (2, 4)
Top 3 Answers
A few days ago
Favorite Answer
a. a line has equations: y = mx + b (slope-intercept form)
slope: m = (y,final – y,initial) / (x,final – x,intial)
= ( – 2 – 3 ) / ( 4 – (-1) )
= -5 / 5
m = -1
choose one of the points to solve for b . …. (4, -1)
y = mx + b
(-2) = (-1)(4) + b ……… b = 2
answer: y = (-1) x + 2 or -x + 2
CHECK
at x=-1, does y = 3 (1st point)…
y = (-1)(-1) + 2 = 3 OK
b. slope is undefined (m = infinity),
so slope-int form not possible, but…equation is: x = 2
1
A few days ago
Find the slope of both lines.
a) is -1
b) is undefined
You can only answer a) put it in y=mx+b form
0
A few days ago
b) is the where x=2 and it doesn’t matter what y is. a horizontal line
0
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