Question

(1,3) and (-3,-5) in linear equation

Answer 1

Formula of linear equation: 「y = mx+c」

Steps to make linear equations:

1) Find "m" (the gradient, or slope)

2) Find "c" (the y-intercept)

Formula of gradient/slope: 「m= (y2-y1) / (x2-x1)」

m= (-5-3)/(-3-1)

m= (-8)/(-4)

m= 2

Sub "x", "y" and "m" into the linear equation「y = mx+c」 to find "c".

(you can use any of the 2 coordinates)

3 = 2(1)+c

3 = 2+c

3-2 = c

c = 1

ANSWER: y= 2x + 1