Question

Find the equation of the line that passes through the points 1,2 and 7,14.

Answer 1

Answer:

y=2x

Step-by-step explanation:

the equation of a line in slope-intercept form is.

y=mx+b

where m is the slope and b the y-intercept

to calculate m use the gradient formula

m=y2−y1/x2−x1

let (x1,y1)=(1,2) and (x2,y2)=(7,14)

=>m=12/6=2

y=2x+b

is a partial equation

to find b substitute either of the 2 given points into

to find b substitute either of the 2 given points intothe partial equation

2=2+b => b=0

hence y= 2x

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