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A chemistry question in GCSE asked me to draw two straight lines of best through the points, how would I do it?

A chemistry question in GCSE asked me to draw two straight lines of best through the points how would I do it class=


Answer :

Dmeiboy

Answer:

1) y = -0.5x+20

2)y = 0x+5

Explanation:

u would find a the slope which is y2-y1/x2-x1

this would give u an answer of M for the equation y=mx+b

to find b just plug in a point that is given so (10,15) the equation would look like y=mx+b --> 15=(slope)10+b

solve for "b" and this will be your y-intercept

the second point for the second line would be (30,5) u would plug this in as well.

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