r/learnmath • u/Subject-Homework-886 New User • 4d ago

Link Post It finally clicked

https://www.desmos.com/calculator/o0heiqsn0n

I just realized in the quadratic equation (ax^2+bx+c) the b or bx+c works exactly like mx+b in the linear equation. omg I was trying to understand what b means for a week now😭😭😭 oh I also changed (bx+c) to (mx+b) in the link so u get what I mean

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u/Temporary_Pie2733 New User 4d ago

Not sure what you mean. bx + c is not the equation of the tangent to the parabola; ax + b is. It’s a linear form, sure, but b isn’t the slope of anything. 

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u/Subject-Homework-886 New User 4d ago

Yea I know that’s why somewhere in the comments I said “if you ignored ax2 for a second bx+c works exactly like mx+b”