SOLUTION: Find an equation for the line with the given properties. Express the equation in​ slope-intercept form.
Slope=7, containing the point (-1,8)
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Question 1036794: Find an equation for the line with the given properties. Express the equation in slope-intercept form.
Slope=7, containing the point (-1,8)
Found 3 solutions by josgarithmetic, macston, jim_thompson5910:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Point-Slope Format:
Putting into Slope-Intercept form:
Substitute what is given and simplify.
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
y=mx+b
m=7, x=-1, y=8
.
8=7(-1)+b
8=-7+b
15=b
.
Slope intercept form
y=mx+b
y=7x+15
.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The given slope is m = 7. The line goes through (-1,8) which means x = -1 and y = 8
So we have these three pieces of info:
m = 7
x = -1
y = 8
We will plug those three pieces of info into y = mx+b then solve for b.
y = mx+b
8 = 7*(-1)+b
8 = -7+b
8+7 = -7+b+7
15 = b
b = 15
So the y intercept is b = 15.
Because m = 7 and b = 15, this means y = mx+b turns into y = 7x + 15 which is the final answer.
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