What is the equation of a line that passes through -6, two and has a slope of -1/2

  slope (y2-y1)/(x2-x1)

m = (q--q)(p--p)

m = 2q/2p

m=q/p

point slope form

y-y1=m(x-x1)

y-q =q/p(x-p)

distribute

y-q=q/p *x -q

add q to each side

y = q/p *x

Step-by-step explanation:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

thats not a system of equations, that is a solution