SOLUTION: What has a slope of 4 and contains the point (-3,-8)??? How would I do the work to get this answer?

Question 535473: What has a slope of 4 and contains the point (-3,-8)??? How would I do the work to get this answer?
Found 2 solutions by oberobic, lmeeks54:
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
The slope = 4.
.
So we can start to define the equation in slope-intercept form.
.
y = mx + b
.
m = 4
.
y = 4x + b
.
Then use the known point (-3,-8) to find 'b'.
.
-8 = 4*(-3) + b
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-8 = -12 + b
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b = 4
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y = 4x + 4
.
y-intercept = (0,4)
.
x-intercept = (-1,0)
.

Answer by lmeeks54(111) (Show Source): You can put this solution on YOUR website!
The basic equation for a linear expression is:
...
y = mx + b
...
where m = slope and b = y intercept.
...
Givens:
slope = 4, which means m = 4
line passes through point (-3, -8)
...
These coordinates are in the form, (x, y); therefore, we know the equation will include the answer y = -8 and x = -3
...
Let's put it into the basic equation and see what we have:
...
-8 = 4(-3) + b
-8 = -12 + b
...
Add 12 to both sides:
-8 + 12 = -12 + 12 + b
4 = b
...
So now we know both m and b to state the equation for the line with slope 4 that passes through the given point: (-3, -8):
...
y = 4x + 4
...
cheers,
Lee
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