graphs and functions: line through (6, 2) having slope of 2  TOPIC_SOLVED

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graphs and functions: line through (6, 2) having slope of 2

Postby isabelrachel on Fri Jul 10, 2009 4:50 am

Can you please tell me if i got this right?

Find the equation for each of the following items below: Show your work for credit.

a. A line that passes through (6,2) and has a slope of 2.

y=6+2x^2
y2-y1=m(x2-x1)
y-y1= m(x-x1)

or

y-2 = 2(x-6)
y= 2x-12+2
y= 2x+10
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Postby stapel_eliz on Fri Jul 10, 2009 12:58 pm

isabelrachel wrote:y=6+2x^2

Where did this quadratic come from...? :confused:

Instead, try using one of the formulas for straight-line equations. For instance, the point-slope formula is useful, since you've been given a point (x1, y1) = (6, 2) and a slope m = 2:

. . . . .y - 2 = 2(x - 6)

Then multiply out and solve for "y=" to get your answer. :wink:
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