y=2x+7
Is the equation of a line. Explain how you can find two sets of (x, y) points that are on the line.

Question

y=2x+7
Is the equation of a line. Explain how you can find two sets of (x, y) points that are on the line.

texaschic101 · Answer

well....just sub in numbers.
y = 2x + 7 ...pick a number for y...lets pick 3. Now sub in 3 for y.
3 = 2x + 7 -- subtract 7 from both sides
3 - 7 = 2x
-4 = 2x -- divide by 2
-2 = x
so one point on the line is (-2,3)

understand how I did that ?

texaschic101 · Answer

so basically, just pick a number for one of the variables, sub that into the equation, and then find the other variable.

anonymous · Answer

ohhh okayy i understand

texaschic101 · Answer

cool...thats always good to hear :)

anonymous · Answer

thanks your the best

texaschic101 · Answer

I don't know about that, but I am happy to help :)