2 Draw a line from each system of linear equations to the correct description of the solution to the system.
y=2x +7
y - 2x=7
no solution
y + 4x = -5
2y = - 8x - 20
exactly one solution
y=+*-2
y=*x + 1
infinitely many solutions

answer:  

123455421

step-by-step explanation: easy

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4