document.write( "Question 1081836: Find the slope of the line with the points: (-4, -2) and (8, 10) \n" ); document.write( "

Algebra.Com's Answer #695885 by addingup(3677) $\"\"$ $\"About$

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(-4, -2) and (8, 10)
\n" ); document.write( "the equation of a line is:
\n" ); document.write( "y = mx+b
\n" ); document.write( "where m is the slope and b the y-intercept
\n" ); document.write( "m = (y_2 - y_1)/(x_2 - x_1)
\n" ); document.write( "Using your numbers:
\n" ); document.write( "m = (10 - -2)/(8 - -4)
\n" ); document.write( "m = 12/12
\n" ); document.write( "m = 1 this is your slope of the line.
\n" ); document.write( "--------------------------
\n" ); document.write( "But in case you need it, here's more: now we can begin t populate our formula:
\n" ); document.write( "y = mx + b
\n" ); document.write( "y = 1x + b
\n" ); document.write( "now we need to find our b. It is called the y-intercept or point intercept because it's the point where the line crosses the y.
\n" ); document.write( "You can use either set of numbers, both sets have an x and a y, and the y is the intercept.
\n" ); document.write( "Confusing? Well, let's do it:
\n" ); document.write( "(-4,-2): y = mx+b or -2 = 1 × -4+b, solving for b: b=-2-(1)(-4) thus b=2
\n" ); document.write( "Now with the other set of numbers:
\n" ); document.write( "(8,10): y = mx + b or 10 = 1 × 8+b, solving for b: b = 10-(1)(8) thus b=2
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