SOLUTION: Write the slope-intercept in form of an equation:
(-2,o) and (7,4)
It really helps me to understand if I can See each step to solve this problem written out like in a math bo
Algebra.Com
Question 172824: Write the slope-intercept in form of an equation:
(-2,o) and (7,4)
It really helps me to understand if I can See each step to solve this problem written out like in a math book. Thank you
Found 2 solutions by nerdybill, jim_thompson5910:
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Slope-intercept form:
y = mx + b
where
m is slope
b is y-intercept
.
Given the two points:
(-2,o) and (7,4)
You can determine the slope:
m = (y2-y1)/(x2-x1)
plugging in our values:
m = (4-0)/(7-(-2))
m = (4-0)/(7+2)
m = 4/9
.
Plug in the slope (above) and one of the two points given say, (-2,0) into the slope-intercept form to find 'b':
y = mx + b
0 = (4/9)(-2) + b
0 = -8/9 + b
b = 8/9
.
Now, that we know m and b:
y = mx + b
y = (4/9)x + (8/9) (this is what they're looking for)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
First let's find the slope of the line through the points
and
Start with the slope formula.
Plug in , , , and
Subtract from to get
Subtract from to get
So the slope of the line that goes through the points
and
is
Now let's use the point slope formula:
Start with the point slope formula
Plug in , , and
Simplify
Rewrite as
Distribute
Multiply
So the equation that goes through the points
and
is
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